Time & moneyAges 13-15

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 13-15

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 5:35 pm in 24-hour clock format.
5 · 35 · 24 · 12-hour & 24-hour clock
2. Write 4:40 pm in 24-hour clock format.
4 · 40 · 24 · 12-hour & 24-hour clock
3. Write 11:55 pm in 24-hour clock format.
11 · 55 · 24 · 12-hour & 24-hour clock
4. Write 1:05 pm in 24-hour clock format.
1 · 05 · 24 · 12-hour & 24-hour clock
5. Write 3:50 pm in 24-hour clock format.
3 · 50 · 24 · 12-hour & 24-hour clock
6. Write 10:45 pm in 24-hour clock format.
10 · 45 · 24 · 12-hour & 24-hour clock
7. Write 8:15 pm in 24-hour clock format.
8 · 15 · 24 · 12-hour & 24-hour clock
8. Write 2:05 pm in 24-hour clock format.
2 · 05 · 24 · 12-hour & 24-hour clock
9. Write 3:55 pm in 24-hour clock format.
3 · 55 · 24 · 12-hour & 24-hour clock
10. Write 2:00 pm in 24-hour clock format.
2 · 00 · 24 · 12-hour & 24-hour clock
11. Write 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
12. Write 5:25 pm in 24-hour clock format.
5 · 25 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104742 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 5:35 pm in 24-hour clock format.
17:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:35.
2. Write 4:40 pm in 24-hour clock format.
16:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:40.
3. Write 11:55 pm in 24-hour clock format.
23:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:55.
4. Write 1:05 pm in 24-hour clock format.
13:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:05.
5. Write 3:50 pm in 24-hour clock format.
15:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:50.
6. Write 10:45 pm in 24-hour clock format.
22:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 10 + 12 = 22, giving 22:45.
7. Write 8:15 pm in 24-hour clock format.
20:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:15.
8. Write 2:05 pm in 24-hour clock format.
14:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:05.
9. Write 3:55 pm in 24-hour clock format.
15:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:55.
10. Write 2:00 pm in 24-hour clock format.
14:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:00.
11. 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.
12. Write 5:25 pm in 24-hour clock format.
17:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:25.

12 questions · Seed 104742 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 5:35 pm in 24-hour clock format.
5 · 35 · 24 · 12-hour & 24-hour clock
2. Write 4:40 pm in 24-hour clock format.
4 · 40 · 24 · 12-hour & 24-hour clock
3. Write 11:55 pm in 24-hour clock format.
11 · 55 · 24 · 12-hour & 24-hour clock
4. Write 1:05 pm in 24-hour clock format.
1 · 05 · 24 · 12-hour & 24-hour clock
5. Write 3:50 pm in 24-hour clock format.
3 · 50 · 24 · 12-hour & 24-hour clock
6. Write 10:45 pm in 24-hour clock format.
10 · 45 · 24 · 12-hour & 24-hour clock
7. Write 8:15 pm in 24-hour clock format.
8 · 15 · 24 · 12-hour & 24-hour clock
8. Write 2:05 pm in 24-hour clock format.
2 · 05 · 24 · 12-hour & 24-hour clock
9. Write 3:55 pm in 24-hour clock format.
3 · 55 · 24 · 12-hour & 24-hour clock
10. Write 2:00 pm in 24-hour clock format.
2 · 00 · 24 · 12-hour & 24-hour clock
11. Write 7:00 pm in 24-hour clock format.
7 · 00 · 24 · 12-hour & 24-hour clock
12. Write 5:25 pm in 24-hour clock format.
5 · 25 · 24 · 12-hour & 24-hour clock

12 questions · Seed 104742 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 5:35 pm in 24-hour clock format.
17:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:35.
2. Write 4:40 pm in 24-hour clock format.
16:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:40.
3. Write 11:55 pm in 24-hour clock format.
23:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:55.
4. Write 1:05 pm in 24-hour clock format.
13:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:05.
5. Write 3:50 pm in 24-hour clock format.
15:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:50.
6. Write 10:45 pm in 24-hour clock format.
22:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 10 + 12 = 22, giving 22:45.
7. Write 8:15 pm in 24-hour clock format.
20:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 8 + 12 = 20, giving 20:15.
8. Write 2:05 pm in 24-hour clock format.
14:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:05.
9. Write 3:55 pm in 24-hour clock format.
15:55
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:55.
10. Write 2:00 pm in 24-hour clock format.
14:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:00.
11. 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.
12. Write 5:25 pm in 24-hour clock format.
17:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:25.

12 questions · Seed 104742 · Age guidance, not curriculum certification