medium Set 10 Form Exercise

Start at 9:45. Add 15 minutes. What time is it?

Show answer

Answer: 10:00

Mode
quarter-hour
Difficulty
medium
StartTime
9:45
Delta
15
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 9:45

Start at 8:15. Subtract 75 minutes. What time is it?

Show answer

Answer: 7:00

Mode
quarter-hour
Difficulty
medium
StartTime
8:15
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 8:15"><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" 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AltText: Clock showing 8:15

Start at 1:15. Add 30 minutes. What time is it?

Show answer

Answer: 1:45

Mode
quarter-hour
Difficulty
medium
StartTime
1:15
Delta
30
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 1:15

Start at 9:00. Add 75 minutes. What time is it?

Show answer

Answer: 10:15

Mode
quarter-hour
Difficulty
medium
StartTime
9:00
Delta
75
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 9:00

Start at 2:15. Subtract 30 minutes. What time is it?

Show answer

Answer: 1:45

Mode
quarter-hour
Difficulty
medium
StartTime
2:15
Delta
-30
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 2:15

Start at 9:30. Add 15 minutes. What time is it?

Show answer

Answer: 9:45

Mode
quarter-hour
Difficulty
medium
StartTime
9:30
Delta
15
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 9:30

Start at 5:15. Subtract 30 minutes. What time is it?

Show answer

Answer: 4:45

Mode
quarter-hour
Difficulty
medium
StartTime
5:15
Delta
-30
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 5:15

Start at 1:15. Subtract 45 minutes. What time is it?

Show answer

Answer: 12:30

Mode
quarter-hour
Difficulty
medium
StartTime
1:15
Delta
-45
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 1:15

Start at 11:15. Subtract 75 minutes. What time is it?

Show answer

Answer: 10:00

Mode
quarter-hour
Difficulty
medium
StartTime
11:15
Delta
-75
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 11:15

Start at 9:45. Add 30 minutes. What time is it?

Show answer

Answer: 10:15

Mode
quarter-hour
Difficulty
medium
StartTime
9:45
Delta
30
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 9:45

Start at 7:30. Add 75 minutes. What time is it?

Show answer

Answer: 8:45

Mode
quarter-hour
Difficulty
medium
StartTime
7:30
Delta
75
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 7:30

Start at 11:15. Subtract 60 minutes. What time is it?

Show answer

Answer: 10:15

Mode
quarter-hour
Difficulty
medium
StartTime
11:15
Delta
-60
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 11:15

Start at 1:00. Subtract 15 minutes. What time is it?

Show answer

Answer: 12:45

Mode
quarter-hour
Difficulty
medium
StartTime
1:00
Delta
-15
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 1:00

Start at 1:00. Add 90 minutes. What time is it?

Show answer

Answer: 2:30

Mode
quarter-hour
Difficulty
medium
StartTime
1:00
Delta
90
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 1:00

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

Show answer

Answer: 10:00

Mode
quarter-hour
Difficulty
medium
StartTime
10:30
Delta
-30
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 10:30

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

Show answer

Answer: 5:30

Mode
quarter-hour
Difficulty
medium
StartTime
4:45
Delta
45
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 4:45

Start at 8:00. Subtract 90 minutes. What time is it?

Show answer

Answer: 6:30

Mode
quarter-hour
Difficulty
medium
StartTime
8:00
Delta
-90
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 8:00

Start at 8:00. Subtract 45 minutes. What time is it?

Show answer

Answer: 7:15

Mode
quarter-hour
Difficulty
medium
StartTime
8:00
Delta
-45
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 8:00

Start at 8:30. Subtract 90 minutes. What time is it?

Show answer

Answer: 7:00

Mode
quarter-hour
Difficulty
medium
StartTime
8:30
Delta
-90
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 8:30

Start at 2:30. Subtract 15 minutes. What time is it?

Show answer

Answer: 2:15

Mode
quarter-hour
Difficulty
medium
StartTime
2:30
Delta
-15
Task
elapsed-time
Visual
Type: inline-svg
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AltText: Clock showing 2:30