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 1:50 pm in 24-hour clock format.
1 · 50 · 24 · 12-hour & 24-hour clock
2. Write 3:20 pm in 24-hour clock format.
3 · 20 · 24 · 12-hour & 24-hour clock
3. Write 4:35 pm in 24-hour clock format.
4 · 35 · 24 · 12-hour & 24-hour clock
4. Write 7:45 pm in 24-hour clock format.
7 · 45 · 24 · 12-hour & 24-hour clock
5. Write 6:45 pm in 24-hour clock format.
6 · 45 · 24 · 12-hour & 24-hour clock
6. Write 7:20 pm in 24-hour clock format.
7 · 20 · 24 · 12-hour & 24-hour clock
7. Write 4:40 pm in 24-hour clock format.
4 · 40 · 24 · 12-hour & 24-hour clock
8. Write 1:40 pm in 24-hour clock format.
1 · 40 · 24 · 12-hour & 24-hour clock
9. Write 9:25 pm in 24-hour clock format.
9 · 25 · 24 · 12-hour & 24-hour clock
10. Write 5:20 pm in 24-hour clock format.
5 · 20 · 24 · 12-hour & 24-hour clock
11. Write 3:00 pm in 24-hour clock format.
3 · 00 · 24 · 12-hour & 24-hour clock
12. Write 6:50 pm in 24-hour clock format.
6 · 50 · 24 · 12-hour & 24-hour clock

12 questions · Seed 44 · 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 1:50 pm in 24-hour clock format.
13:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:50.
2. 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.
3. 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.
4. Write 7:45 pm in 24-hour clock format.
19:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:45.
5. 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.
6. Write 7:20 pm in 24-hour clock format.
19:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:20.
7. 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.
8. Write 1:40 pm in 24-hour clock format.
13:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:40.
9. Write 9:25 pm in 24-hour clock format.
21:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:25.
10. Write 5:20 pm in 24-hour clock format.
17:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:20.
11. 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.
12. Write 6:50 pm in 24-hour clock format.
18:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:50.

12 questions · Seed 44 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 1:50 pm in 24-hour clock format.
1 · 50 · 24 · 12-hour & 24-hour clock
2. Write 3:20 pm in 24-hour clock format.
3 · 20 · 24 · 12-hour & 24-hour clock
3. Write 4:35 pm in 24-hour clock format.
4 · 35 · 24 · 12-hour & 24-hour clock
4. Write 7:45 pm in 24-hour clock format.
7 · 45 · 24 · 12-hour & 24-hour clock
5. Write 6:45 pm in 24-hour clock format.
6 · 45 · 24 · 12-hour & 24-hour clock
6. Write 7:20 pm in 24-hour clock format.
7 · 20 · 24 · 12-hour & 24-hour clock
7. Write 4:40 pm in 24-hour clock format.
4 · 40 · 24 · 12-hour & 24-hour clock
8. Write 1:40 pm in 24-hour clock format.
1 · 40 · 24 · 12-hour & 24-hour clock
9. Write 9:25 pm in 24-hour clock format.
9 · 25 · 24 · 12-hour & 24-hour clock
10. Write 5:20 pm in 24-hour clock format.
5 · 20 · 24 · 12-hour & 24-hour clock
11. Write 3:00 pm in 24-hour clock format.
3 · 00 · 24 · 12-hour & 24-hour clock
12. Write 6:50 pm in 24-hour clock format.
6 · 50 · 24 · 12-hour & 24-hour clock

12 questions · Seed 44 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. Write 1:50 pm in 24-hour clock format.
13:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:50.
2. 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.
3. 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.
4. Write 7:45 pm in 24-hour clock format.
19:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:45.
5. 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.
6. Write 7:20 pm in 24-hour clock format.
19:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:20.
7. 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.
8. Write 1:40 pm in 24-hour clock format.
13:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:40.
9. Write 9:25 pm in 24-hour clock format.
21:25
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 9 + 12 = 21, giving 21:25.
10. Write 5:20 pm in 24-hour clock format.
17:20
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:20.
11. 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.
12. Write 6:50 pm in 24-hour clock format.
18:50
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:50.

12 questions · Seed 44 · Age guidance, not curriculum certification