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 3:55 pm in 24-hour clock format.
3 · 55 · 24 · 12-hour & 24-hour clock
2. Write 6:15 pm in 24-hour clock format.
6 · 15 · 24 · 12-hour & 24-hour clock
3. Write 7:10 pm in 24-hour clock format.
7 · 10 · 24 · 12-hour & 24-hour clock
4. Write 2:40 pm in 24-hour clock format.
2 · 40 · 24 · 12-hour & 24-hour clock
5. Write 1:30 pm in 24-hour clock format.
1 · 30 · 24 · 12-hour & 24-hour clock
6. Write 3:00 pm in 24-hour clock format.
3 · 00 · 24 · 12-hour & 24-hour clock
7. Write 11:25 pm in 24-hour clock format.
11 · 25 · 24 · 12-hour & 24-hour clock
8. Write 5:35 pm in 24-hour clock format.
5 · 35 · 24 · 12-hour & 24-hour clock
9. Write 2:25 pm in 24-hour clock format.
2 · 25 · 24 · 12-hour & 24-hour clock
10. Write 7:15 pm in 24-hour clock format.
7 · 15 · 24 · 12-hour & 24-hour clock
11. Write 3:35 pm in 24-hour clock format.
3 · 35 · 24 · 12-hour & 24-hour clock
12. Write 8:15 pm in 24-hour clock format.
8 · 15 · 24 · 12-hour & 24-hour clock

12 questions · Seed 43 · 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 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.
2. Write 6:15 pm in 24-hour clock format.
18:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:15.
3. 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.
4. Write 2:40 pm in 24-hour clock format.
14:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:40.
5. Write 1:30 pm in 24-hour clock format.
13:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:30.
6. Write 3:00 pm in 24-hour clock format.
15:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:00.
7. Write 11:25 pm in 24-hour clock format.
23:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:25.
8. 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.
9. Write 2:25 pm in 24-hour clock format.
14:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:25.
10. Write 7:15 pm in 24-hour clock format.
19:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:15.
11. Write 3:35 pm in 24-hour clock format.
15:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:35.
12. 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.

12 questions · Seed 43 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 3:55 pm in 24-hour clock format.
3 · 55 · 24 · 12-hour & 24-hour clock
2. Write 6:15 pm in 24-hour clock format.
6 · 15 · 24 · 12-hour & 24-hour clock
3. Write 7:10 pm in 24-hour clock format.
7 · 10 · 24 · 12-hour & 24-hour clock
4. Write 2:40 pm in 24-hour clock format.
2 · 40 · 24 · 12-hour & 24-hour clock
5. Write 1:30 pm in 24-hour clock format.
1 · 30 · 24 · 12-hour & 24-hour clock
6. Write 3:00 pm in 24-hour clock format.
3 · 00 · 24 · 12-hour & 24-hour clock
7. Write 11:25 pm in 24-hour clock format.
11 · 25 · 24 · 12-hour & 24-hour clock
8. Write 5:35 pm in 24-hour clock format.
5 · 35 · 24 · 12-hour & 24-hour clock
9. Write 2:25 pm in 24-hour clock format.
2 · 25 · 24 · 12-hour & 24-hour clock
10. Write 7:15 pm in 24-hour clock format.
7 · 15 · 24 · 12-hour & 24-hour clock
11. Write 3:35 pm in 24-hour clock format.
3 · 35 · 24 · 12-hour & 24-hour clock
12. Write 8:15 pm in 24-hour clock format.
8 · 15 · 24 · 12-hour & 24-hour clock

12 questions · Seed 43 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. 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.
2. Write 6:15 pm in 24-hour clock format.
18:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:15.
3. 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.
4. Write 2:40 pm in 24-hour clock format.
14:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:40.
5. Write 1:30 pm in 24-hour clock format.
13:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:30.
6. Write 3:00 pm in 24-hour clock format.
15:00
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:00.
7. Write 11:25 pm in 24-hour clock format.
23:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 11 + 12 = 23, giving 23:25.
8. 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.
9. Write 2:25 pm in 24-hour clock format.
14:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 2 + 12 = 14, giving 14:25.
10. Write 7:15 pm in 24-hour clock format.
19:15
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:15.
11. Write 3:35 pm in 24-hour clock format.
15:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 3 + 12 = 15, giving 15:35.
12. 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.

12 questions · Seed 43 · Age guidance, not curriculum certification