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 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
2. Write 7:10 pm in 24-hour clock format.
7 · 10 · 24 · 12-hour & 24-hour clock
3. Write 4:05 pm in 24-hour clock format.
4 · 05 · 24 · 12-hour & 24-hour clock
4. Write 5:50 pm in 24-hour clock format.
5 · 50 · 24 · 12-hour & 24-hour clock
5. Write 2:35 pm in 24-hour clock format.
2 · 35 · 24 · 12-hour & 24-hour clock
6. Write 3:20 pm in 24-hour clock format.
3 · 20 · 24 · 12-hour & 24-hour clock
7. Write 9:15 pm in 24-hour clock format.
9 · 15 · 24 · 12-hour & 24-hour clock
8. Write 5:10 pm in 24-hour clock format.
5 · 10 · 24 · 12-hour & 24-hour clock
9. Write 6:45 pm in 24-hour clock format.
6 · 45 · 24 · 12-hour & 24-hour clock
10. Write 6:55 pm in 24-hour clock format.
6 · 55 · 24 · 12-hour & 24-hour clock
11. Write 2:50 pm in 24-hour clock format.
2 · 50 · 24 · 12-hour & 24-hour clock
12. Write 5:05 pm in 24-hour clock format.
5 · 05 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104740 · 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 7:00 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.
2. Write 7:10 pm in 24-hour clock format.
19:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:10.
3. Write 4:05 pm in 24-hour clock format.
16:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:05.
4. Write 5:50 pm in 24-hour clock format.
17:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:50.
5. 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.
6. Write 3:20 pm in 24-hour clock format.
15:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:20.
7. Write 9:15 pm in 24-hour clock format.
21:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:15.
8. Write 5:10 pm in 24-hour clock format.
17:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:10.
9. Write 6:45 pm in 24-hour clock format.
18:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:45.
10. Write 6:55 pm in 24-hour clock format.
18:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:55.
11. Write 2:50 pm in 24-hour clock format.
14:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:50.
12. Write 5:05 pm in 24-hour clock format.
17:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:05.

12 questions · Seed 104740 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
2. Write 7:10 pm in 24-hour clock format.
7 · 10 · 24 · 12-hour & 24-hour clock
3. Write 4:05 pm in 24-hour clock format.
4 · 05 · 24 · 12-hour & 24-hour clock
4. Write 5:50 pm in 24-hour clock format.
5 · 50 · 24 · 12-hour & 24-hour clock
5. Write 2:35 pm in 24-hour clock format.
2 · 35 · 24 · 12-hour & 24-hour clock
6. Write 3:20 pm in 24-hour clock format.
3 · 20 · 24 · 12-hour & 24-hour clock
7. Write 9:15 pm in 24-hour clock format.
9 · 15 · 24 · 12-hour & 24-hour clock
8. Write 5:10 pm in 24-hour clock format.
5 · 10 · 24 · 12-hour & 24-hour clock
9. Write 6:45 pm in 24-hour clock format.
6 · 45 · 24 · 12-hour & 24-hour clock
10. Write 6:55 pm in 24-hour clock format.
6 · 55 · 24 · 12-hour & 24-hour clock
11. Write 2:50 pm in 24-hour clock format.
2 · 50 · 24 · 12-hour & 24-hour clock
12. Write 5:05 pm in 24-hour clock format.
5 · 05 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104740 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 7:00 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.
2. Write 7:10 pm in 24-hour clock format.
19:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:10.
3. Write 4:05 pm in 24-hour clock format.
16:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:05.
4. Write 5:50 pm in 24-hour clock format.
17:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:50.
5. 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.
6. Write 3:20 pm in 24-hour clock format.
15:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:20.
7. Write 9:15 pm in 24-hour clock format.
21:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:15.
8. Write 5:10 pm in 24-hour clock format.
17:10
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:10.
9. Write 6:45 pm in 24-hour clock format.
18:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:45.
10. Write 6:55 pm in 24-hour clock format.
18:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:55.
11. Write 2:50 pm in 24-hour clock format.
14:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:50.
12. Write 5:05 pm in 24-hour clock format.
17:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:05.

12 questions · Seed 104740 · Age guidance, not curriculum certification