Time & moneyAges 10-12

12-hour & 24-hour clock

Convert afternoon and evening 12-hour times into standard 24-hour clock notation. Review suitability for your learners before teaching.

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Age band:Ages 10-12 Ages 13-15

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Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 7:25 pm in 24-hour clock format.
7 · 25 · 24 · 12-hour & 24-hour clock
2. Write 11:50 pm in 24-hour clock format.
11 · 50 · 24 · 12-hour & 24-hour clock
3. Write 11:10 pm in 24-hour clock format.
11 · 10 · 24 · 12-hour & 24-hour clock
4. Write 4:45 pm in 24-hour clock format.
4 · 45 · 24 · 12-hour & 24-hour clock
5. Write 5:55 pm in 24-hour clock format.
5 · 55 · 24 · 12-hour & 24-hour clock
6. Write 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
7. Write 2:10 pm in 24-hour clock format.
2 · 10 · 24 · 12-hour & 24-hour clock
8. Write 8:55 pm in 24-hour clock format.
8 · 55 · 24 · 12-hour & 24-hour clock
9. Write 3:45 pm in 24-hour clock format.
3 · 45 · 24 · 12-hour & 24-hour clock
10. Write 8:30 pm in 24-hour clock format.
8 · 30 · 24 · 12-hour & 24-hour clock
11. Write 4:10 pm in 24-hour clock format.
4 · 10 · 24 · 12-hour & 24-hour clock
12. Write 8:10 pm in 24-hour clock format.
8 · 10 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104739 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 7:25 pm in 24-hour clock format.
19:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:25.
2. Write 11:50 pm in 24-hour clock format.
23:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:50.
3. Write 11:10 pm in 24-hour clock format.
23:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:10.
4. Write 4:45 pm in 24-hour clock format.
16:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:45.
5. Write 5:55 pm in 24-hour clock format.
17:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:55.
6. Write 7:00 pm in 24-hour clock format.
19:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:00.
7. Write 2:10 pm in 24-hour clock format.
14:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:10.
8. Write 8:55 pm in 24-hour clock format.
20:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:55.
9. Write 3:45 pm in 24-hour clock format.
15:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:45.
10. Write 8:30 pm in 24-hour clock format.
20:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:30.
11. Write 4:10 pm in 24-hour clock format.
16:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:10.
12. Write 8:10 pm in 24-hour clock format.
20:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:10.

12 questions · Seed 104739 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 7:25 pm in 24-hour clock format.
7 · 25 · 24 · 12-hour & 24-hour clock
2. Write 11:50 pm in 24-hour clock format.
11 · 50 · 24 · 12-hour & 24-hour clock
3. Write 11:10 pm in 24-hour clock format.
11 · 10 · 24 · 12-hour & 24-hour clock
4. Write 4:45 pm in 24-hour clock format.
4 · 45 · 24 · 12-hour & 24-hour clock
5. Write 5:55 pm in 24-hour clock format.
5 · 55 · 24 · 12-hour & 24-hour clock
6. Write 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
7. Write 2:10 pm in 24-hour clock format.
2 · 10 · 24 · 12-hour & 24-hour clock
8. Write 8:55 pm in 24-hour clock format.
8 · 55 · 24 · 12-hour & 24-hour clock
9. Write 3:45 pm in 24-hour clock format.
3 · 45 · 24 · 12-hour & 24-hour clock
10. Write 8:30 pm in 24-hour clock format.
8 · 30 · 24 · 12-hour & 24-hour clock
11. Write 4:10 pm in 24-hour clock format.
4 · 10 · 24 · 12-hour & 24-hour clock
12. Write 8:10 pm in 24-hour clock format.
8 · 10 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104739 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 7:25 pm in 24-hour clock format.
19:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:25.
2. Write 11:50 pm in 24-hour clock format.
23:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:50.
3. Write 11:10 pm in 24-hour clock format.
23:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:10.
4. Write 4:45 pm in 24-hour clock format.
16:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:45.
5. Write 5:55 pm in 24-hour clock format.
17:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:55.
6. Write 7:00 pm in 24-hour clock format.
19:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:00.
7. Write 2:10 pm in 24-hour clock format.
14:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:10.
8. Write 8:55 pm in 24-hour clock format.
20:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:55.
9. Write 3:45 pm in 24-hour clock format.
15:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:45.
10. Write 8:30 pm in 24-hour clock format.
20:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:30.
11. Write 4:10 pm in 24-hour clock format.
16:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:10.
12. Write 8:10 pm in 24-hour clock format.
20:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:10.

12 questions · Seed 104739 · Age guidance, not curriculum certification