hard Set 4 Form Exercise

Start at 6:35. Subtract 75 minutes. What time is it?

Show answer

Answer: 5:20

Mode
5-minutes
Difficulty
hard
StartTime
6:35
Delta
-75
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 6:35"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="87.22" y2="140.53" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="69.4" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 6:35

Start at 1:10. Add 5 minutes. What time is it?

Show answer

Answer: 1:15

Mode
5-minutes
Difficulty
hard
StartTime
1:10
Delta
5
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 1:10"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="124.38" y2="65.19" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="153" y2="69.4" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 1:10

Start at 10:30. Subtract 60 minutes. What time is it?

Show answer

Answer: 9:30

Mode
5-minutes
Difficulty
hard
StartTime
10:30
Delta
-60
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 10:30"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="69.95" y2="69.95" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="100" y2="161.2" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 10:30

Start at 1:25. Subtract 55 minutes. What time is it?

Show answer

Answer: 12:30

Mode
5-minutes
Difficulty
hard
StartTime
1:25
Delta
-55
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 1:25"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="128.71" y2="68.67" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="130.6" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 1:25

Start at 4:30. Subtract 50 minutes. What time is it?

Show answer

Answer: 3:40

Mode
5-minutes
Difficulty
hard
StartTime
4:30
Delta
-50
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 4:30"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="130.05" y2="130.05" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="100" y2="161.2" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 4:30

Start at 10:55. Add 50 minutes. What time is it?

Show answer

Answer: 11:45

Mode
5-minutes
Difficulty
hard
StartTime
10:55
Delta
50
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 10:55"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="77.16" y2="64.16" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="69.4" y2="47" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 10:55

Start at 11:35. Add 55 minutes. What time is it?

Show answer

Answer: 12:30

Mode
5-minutes
Difficulty
hard
StartTime
11:35
Delta
55
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 11:35"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="90.8" y2="58.51" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="69.4" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 11:35

Start at 6:50. Add 65 minutes. What time is it?

Show answer

Answer: 7:55

Mode
5-minutes
Difficulty
hard
StartTime
6:50
Delta
65
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 6:50"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="82.04" y2="138.52" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="47" y2="69.4" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 6:50

Start at 10:45. Subtract 40 minutes. What time is it?

Show answer

Answer: 10:05

Mode
5-minutes
Difficulty
hard
StartTime
10:45
Delta
-40
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 10:45"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="74.13" y2="66.28" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="38.8" y2="100" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 10:45

Start at 12:25. Add 10 minutes. What time is it?

Show answer

Answer: 12:35

Mode
5-minutes
Difficulty
hard
StartTime
12:25
Delta
10
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 12:25"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="109.2" y2="58.51" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="130.6" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 12:25

Start at 2:35. Subtract 55 minutes. What time is it?

Show answer

Answer: 1:40

Mode
5-minutes
Difficulty
hard
StartTime
2:35
Delta
-55
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 2:35"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="141.49" y2="90.8" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="69.4" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 2:35

Start at 11:30. Subtract 85 minutes. What time is it?

Show answer

Answer: 10:05

Mode
5-minutes
Difficulty
hard
StartTime
11:30
Delta
-85
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 11:30"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="89" y2="58.95" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="100" y2="161.2" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 11:30

Start at 9:05. Add 15 minutes. What time is it?

Show answer

Answer: 9:20

Mode
5-minutes
Difficulty
hard
StartTime
9:05
Delta
15
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 9:05"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="57.54" y2="98.15" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="130.6" y2="47" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 9:05

Start at 10:10. Subtract 50 minutes. What time is it?

Show answer

Answer: 9:20

Mode
5-minutes
Difficulty
hard
StartTime
10:10
Delta
-50
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 10:10"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="65.19" y2="75.62" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="153" y2="69.4" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 10:10

Start at 5:10. Add 35 minutes. What time is it?

Show answer

Answer: 5:45

Mode
5-minutes
Difficulty
hard
StartTime
5:10
Delta
35
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 5:10"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="117.96" y2="138.52" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="153" y2="69.4" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 5:10

Start at 7:10. Add 60 minutes. What time is it?

Show answer

Answer: 8:10

Mode
5-minutes
Difficulty
hard
StartTime
7:10
Delta
60
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 7:10"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="75.62" y2="134.81" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="153" y2="69.4" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 7:10

Start at 4:45. Subtract 20 minutes. What time is it?

Show answer

Answer: 4:25

Mode
5-minutes
Difficulty
hard
StartTime
4:45
Delta
-20
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 4:45"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="125.87" y2="133.72" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="38.8" y2="100" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 4:45

Start at 12:05. Add 50 minutes. What time is it?

Show answer

Answer: 12:55

Mode
5-minutes
Difficulty
hard
StartTime
12:05
Delta
50
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 12:05"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="101.85" y2="57.54" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="130.6" y2="47" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 12:05

Start at 9:15. Add 20 minutes. What time is it?

Show answer

Answer: 9:35

Mode
5-minutes
Difficulty
hard
StartTime
9:15
Delta
20
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 9:15"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="57.86" y2="94.45" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="161.2" y2="100" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 9:15

Start at 3:25. Add 35 minutes. What time is it?

Show answer

Answer: 4:00

Mode
5-minutes
Difficulty
hard
StartTime
3:25
Delta
35
Task
elapsed-time
Visual
Type: inline-svg
Svg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 3:25"><circle cx="100" cy="100" r="85" fill="#fff" stroke="#333" stroke-width="2.5"/><line x1="100" y1="27" x2="100" y2="17" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="108.26" y1="21.43" x2="108.68" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="22.73" x2="117.26" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="24.87" x2="125.65" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="132.13" y1="27.83" x2="133.76" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="36.78" x2="141.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="146.44" y1="36.09" x2="148.79" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="41.29" x2="155.54" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="47.14" x2="161.68" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.91" y1="53.56" x2="167.15" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="63.5" x2="171.88" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="172.17" y1="67.87" x2="175.82" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="75.59" x2="178.94" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="83.57" x2="181.19" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="178.57" y1="91.74" x2="182.55" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="173" y1="100" x2="183" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="178.57" y1="108.26" x2="182.55" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="177.27" y1="116.43" x2="181.19" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="175.13" y1="124.41" x2="178.94" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="172.17" y1="132.13" x2="175.82" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="163.22" y1="136.5" x2="171.88" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="163.91" y1="146.44" x2="167.15" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="158.71" y1="152.86" x2="161.68" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="152.86" y1="158.71" x2="155.54" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="146.44" y1="163.91" x2="148.79" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="136.5" y1="163.22" x2="141.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="132.13" y1="172.17" x2="133.76" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="124.41" y1="175.13" x2="125.65" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="116.43" y1="177.27" x2="117.26" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="108.26" y1="178.57" x2="108.68" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="100" y1="173" x2="100" y2="183" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="91.74" y1="178.57" x2="91.32" y2="182.55" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="177.27" x2="82.74" y2="181.19" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="175.13" x2="74.35" y2="178.94" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="67.87" y1="172.17" x2="66.24" y2="175.82" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="163.22" x2="58.5" y2="171.88" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="53.56" y1="163.91" x2="51.21" y2="167.15" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="158.71" x2="44.46" y2="161.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="152.86" x2="38.32" y2="155.54" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.09" y1="146.44" x2="32.85" y2="148.79" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="136.5" x2="28.12" y2="141.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="27.83" y1="132.13" x2="24.18" y2="133.76" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="124.41" x2="21.06" y2="125.65" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="116.43" x2="18.81" y2="117.26" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="21.43" y1="108.26" x2="17.45" y2="108.68" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27" y1="100" x2="17" y2="100" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="21.43" y1="91.74" x2="17.45" y2="91.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="22.73" y1="83.57" x2="18.81" y2="82.74" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="24.87" y1="75.59" x2="21.06" y2="74.35" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="27.83" y1="67.87" x2="24.18" y2="66.24" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="36.78" y1="63.5" x2="28.12" y2="58.5" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="36.09" y1="53.56" x2="32.85" y2="51.21" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="41.29" y1="47.14" x2="38.32" y2="44.46" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="47.14" y1="41.29" x2="44.46" y2="38.32" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="53.56" y1="36.09" x2="51.21" y2="32.85" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="63.5" y1="36.78" x2="58.5" y2="28.12" stroke="#333" stroke-width="2" stroke-linecap="round"/><line x1="67.87" y1="27.83" x2="66.24" y2="24.18" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="75.59" y1="24.87" x2="74.35" y2="21.06" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="83.57" y1="22.73" x2="82.74" y2="18.81" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><line x1="91.74" y1="21.43" x2="91.32" y2="17.45" stroke="#333" stroke-width="0.8" stroke-linecap="round"/><text x="130.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">1</text><text x="152.83" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">2</text><text x="161" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">3</text><text x="152.83" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">4</text><text x="130.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">5</text><text x="100" y="161" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">6</text><text x="69.5" y="152.83" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">7</text><text x="47.17" y="130.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">8</text><text x="39" y="100" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">9</text><text x="47.17" y="69.5" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">10</text><text x="69.5" y="47.17" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">11</text><text x="100" y="39" text-anchor="middle" dominant-baseline="central" font-family="system-ui, sans-serif" font-size="16" font-weight="600" fill="#222">12</text><line x1="100" y1="100" x2="141.49" y2="109.2" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="130.6" y2="153" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>
AltText: Clock showing 3:25