Workbook Detail
Clock Math 1 Minute Hard — Set 1
Start at 12:20. Subtract 15 minutes. What time is it?
Show answer
Answer: 12:05
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 12:20
- Delta
- -15
- Task
- elapsed-time
- Visual
- Type: inline-svgSvg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 12:20"><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" 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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="107.38" y2="58.15" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="153" y2="130.6" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 12:20
Start at 3:56. Add 47 minutes. What time is it?
Show answer
Answer: 4:43
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 3:56
- Delta
- 47
- Task
- elapsed-time
- Visual
- Type: inline-svgSvg: <svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Clock showing 3:56"><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" 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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="137.53" y2="119.95" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="75.11" y2="44.09" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 3:56
Start at 10:34. Add 56 minutes. What time is it?
Show answer
Answer: 11:30
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 10:34
- Delta
- 56
- Task
- elapsed-time
- Visual
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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="71.02" y2="68.92" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="75.11" y2="155.91" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 10:34
Start at 1:27. Add 30 minutes. What time is it?
Show answer
Answer: 1:57
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 1:27
- Delta
- 30
- Task
- elapsed-time
- Visual
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Start at 4:44. Subtract 16 minutes. What time is it?
Show answer
Answer: 4:28
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 4:44
- Delta
- -16
- Task
- elapsed-time
- Visual
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Start at 4:14. Subtract 8 minutes. What time is it?
Show answer
Answer: 4:06
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 4:14
- Delta
- -8
- Task
- elapsed-time
- Visual
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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="133.94" y2="125.58" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="160.86" y2="93.6" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 4:14
Start at 11:42. Add 87 minutes. What time is it?
Show answer
Answer: 1:09
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 11:42
- Delta
- 87
- Task
- elapsed-time
- Visual
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Start at 3:06. Add 28 minutes. What time is it?
Show answer
Answer: 3:34
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 3:06
- Delta
- 28
- Task
- elapsed-time
- Visual
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Start at 2:18. Subtract 44 minutes. What time is it?
Show answer
Answer: 1:34
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 2:18
- Delta
- -44
- Task
- elapsed-time
- Visual
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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="139.68" y2="84.77" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="158.2" y2="118.91" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 2:18
Start at 6:23. Subtract 33 minutes. What time is it?
Show answer
Answer: 5:50
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 6:23
- Delta
- -33
- Task
- elapsed-time
- Visual
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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="91.53" y2="141.65" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="140.95" y2="145.48" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 6:23
Start at 1:49. Subtract 5 minutes. What time is it?
Show answer
Answer: 1:44
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 1:49
- Delta
- -5
- Task
- elapsed-time
- Visual
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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="134.6" y2="75.32" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="44.09" y2="75.11" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 1:49
Start at 1:27. Subtract 53 minutes. What time is it?
Show answer
Answer: 12:34
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 1:27
- Delta
- -53
- Task
- elapsed-time
- Visual
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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="129.26" y2="69.17" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="118.91" y2="158.2" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 1:27
Start at 6:53. Add 52 minutes. What time is it?
Show answer
Answer: 7:45
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 6:53
- Delta
- 52
- Task
- elapsed-time
- Visual
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Start at 6:36. Add 28 minutes. What time is it?
Show answer
Answer: 7:04
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 6:36
- Delta
- 28
- Task
- elapsed-time
- Visual
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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="86.87" y2="140.42" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="64.03" y2="149.51" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 6:36
Start at 11:20. Add 15 minutes. What time is it?
Show answer
Answer: 11:35
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 11:20
- Delta
- 15
- Task
- elapsed-time
- Visual
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Start at 10:16. Subtract 18 minutes. What time is it?
Show answer
Answer: 9:58
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 10:16
- Delta
- -18
- Task
- elapsed-time
- Visual
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Start at 12:44. Subtract 58 minutes. What time is it?
Show answer
Answer: 11:46
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 12:44
- Delta
- -58
- Task
- elapsed-time
- Visual
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Start at 1:58. Subtract 82 minutes. What time is it?
Show answer
Answer: 12:36
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 1:58
- Delta
- -82
- Task
- elapsed-time
- Visual
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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="136.43" y2="78.11" stroke="#222" stroke-width="5" stroke-linecap="round"/><line x1="100" y1="100" x2="87.28" y2="40.14" stroke="#222" stroke-width="3" stroke-linecap="round"/><circle cx="100" cy="100" r="4" fill="#222"/></svg>AltText: Clock showing 1:58
Start at 7:21. Add 86 minutes. What time is it?
Show answer
Answer: 8:47
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 7:21
- Delta
- 86
- Task
- elapsed-time
- Visual
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Start at 7:55. Subtract 17 minutes. What time is it?
Show answer
Answer: 7:38
- Mode
- 1-minute
- Difficulty
- hard
- StartTime
- 7:55
- Delta
- -17
- Task
- elapsed-time
- Visual
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Teaching Notes
Practice clock math 1 minute with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Clock Math 1 Minute Hard Worksheets worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
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