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 6:25 pm in 24-hour clock format.
6 · 25 · 24 · 12-hour & 24-hour clock
2. Write 4:30 pm in 24-hour clock format.
4 · 30 · 24 · 12-hour & 24-hour clock
3. Write 2:35 pm in 24-hour clock format.
2 · 35 · 24 · 12-hour & 24-hour clock
4. Write 4:35 pm in 24-hour clock format.
4 · 35 · 24 · 12-hour & 24-hour clock
5. Write 11:45 pm in 24-hour clock format.
11 · 45 · 24 · 12-hour & 24-hour clock
6. Write 5:30 pm in 24-hour clock format.
5 · 30 · 24 · 12-hour & 24-hour clock
7. Write 3:45 pm in 24-hour clock format.
3 · 45 · 24 · 12-hour & 24-hour clock
8. Write 2:10 pm in 24-hour clock format.
2 · 10 · 24 · 12-hour & 24-hour clock
9. Write 3:30 pm in 24-hour clock format.
3 · 30 · 24 · 12-hour & 24-hour clock
10. Write 11:05 pm in 24-hour clock format.
11 · 05 · 24 · 12-hour & 24-hour clock
11. Write 9:00 pm in 24-hour clock format.
9 · 00 · 24 · 12-hour & 24-hour clock
12. Write 7:50 pm in 24-hour clock format.
7 · 50 · 24 · 12-hour & 24-hour clock

12 questions · Seed 53 · 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 6:25 pm in 24-hour clock format.
18:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:25.
2. Write 4:30 pm in 24-hour clock format.
16:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:30.
3. Write 2:35 pm in 24-hour clock format.
14:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:35.
4. Write 4:35 pm in 24-hour clock format.
16:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:35.
5. Write 11:45 pm in 24-hour clock format.
23:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:45.
6. Write 5:30 pm in 24-hour clock format.
17:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:30.
7. 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.
8. 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.
9. Write 3:30 pm in 24-hour clock format.
15:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:30.
10. Write 11:05 pm in 24-hour clock format.
23:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:05.
11. Write 9:00 pm in 24-hour clock format.
21:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:00.
12. Write 7:50 pm in 24-hour clock format.
19:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:50.

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 6:25 pm in 24-hour clock format.
6 · 25 · 24 · 12-hour & 24-hour clock
2. Write 4:30 pm in 24-hour clock format.
4 · 30 · 24 · 12-hour & 24-hour clock
3. Write 2:35 pm in 24-hour clock format.
2 · 35 · 24 · 12-hour & 24-hour clock
4. Write 4:35 pm in 24-hour clock format.
4 · 35 · 24 · 12-hour & 24-hour clock
5. Write 11:45 pm in 24-hour clock format.
11 · 45 · 24 · 12-hour & 24-hour clock
6. Write 5:30 pm in 24-hour clock format.
5 · 30 · 24 · 12-hour & 24-hour clock
7. Write 3:45 pm in 24-hour clock format.
3 · 45 · 24 · 12-hour & 24-hour clock
8. Write 2:10 pm in 24-hour clock format.
2 · 10 · 24 · 12-hour & 24-hour clock
9. Write 3:30 pm in 24-hour clock format.
3 · 30 · 24 · 12-hour & 24-hour clock
10. Write 11:05 pm in 24-hour clock format.
11 · 05 · 24 · 12-hour & 24-hour clock
11. Write 9:00 pm in 24-hour clock format.
9 · 00 · 24 · 12-hour & 24-hour clock
12. Write 7:50 pm in 24-hour clock format.
7 · 50 · 24 · 12-hour & 24-hour clock

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 6:25 pm in 24-hour clock format.
18:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:25.
2. Write 4:30 pm in 24-hour clock format.
16:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:30.
3. Write 2:35 pm in 24-hour clock format.
14:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:35.
4. Write 4:35 pm in 24-hour clock format.
16:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:35.
5. Write 11:45 pm in 24-hour clock format.
23:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:45.
6. Write 5:30 pm in 24-hour clock format.
17:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:30.
7. 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.
8. 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.
9. Write 3:30 pm in 24-hour clock format.
15:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:30.
10. Write 11:05 pm in 24-hour clock format.
23:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:05.
11. Write 9:00 pm in 24-hour clock format.
21:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:00.
12. Write 7:50 pm in 24-hour clock format.
19:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:50.

12 questions · Seed 53 · Age guidance, not curriculum certification