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 4:30 pm in 24-hour clock format.
4 · 30 · 24 · 12-hour & 24-hour clock
2. Write 6:35 pm in 24-hour clock format.
6 · 35 · 24 · 12-hour & 24-hour clock
3. Write 2:05 pm in 24-hour clock format.
2 · 05 · 24 · 12-hour & 24-hour clock
4. Write 4:45 pm in 24-hour clock format.
4 · 45 · 24 · 12-hour & 24-hour clock
5. Write 7:50 pm in 24-hour clock format.
7 · 50 · 24 · 12-hour & 24-hour clock
6. Write 1:45 pm in 24-hour clock format.
1 · 45 · 24 · 12-hour & 24-hour clock
7. Write 3:00 pm in 24-hour clock format.
3 · 00 · 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 7:05 pm in 24-hour clock format.
7 · 05 · 24 · 12-hour & 24-hour clock
10. Write 5:40 pm in 24-hour clock format.
5 · 40 · 24 · 12-hour & 24-hour clock
11. Write 6:30 pm in 24-hour clock format.
6 · 30 · 24 · 12-hour & 24-hour clock
12. Write 6:25 pm in 24-hour clock format.
6 · 25 · 24 · 12-hour & 24-hour clock

12 questions · Seed 57 · 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 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.
2. Write 6:35 pm in 24-hour clock format.
18:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:35.
3. 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.
4. Write 4:45 pm in 24-hour clock format.
16:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:45.
5. 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.
6. Write 1:45 pm in 24-hour clock format.
13:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:45.
7. 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.
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 7:05 pm in 24-hour clock format.
19:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:05.
10. Write 5:40 pm in 24-hour clock format.
17:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:40.
11. Write 6:30 pm in 24-hour clock format.
18:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:30.
12. 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.

12 questions · Seed 57 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

12-hour & 24-hour clock

Take your time. Show your thinking.

1. Write 4:30 pm in 24-hour clock format.
4 · 30 · 24 · 12-hour & 24-hour clock
2. Write 6:35 pm in 24-hour clock format.
6 · 35 · 24 · 12-hour & 24-hour clock
3. Write 2:05 pm in 24-hour clock format.
2 · 05 · 24 · 12-hour & 24-hour clock
4. Write 4:45 pm in 24-hour clock format.
4 · 45 · 24 · 12-hour & 24-hour clock
5. Write 7:50 pm in 24-hour clock format.
7 · 50 · 24 · 12-hour & 24-hour clock
6. Write 1:45 pm in 24-hour clock format.
1 · 45 · 24 · 12-hour & 24-hour clock
7. Write 3:00 pm in 24-hour clock format.
3 · 00 · 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 7:05 pm in 24-hour clock format.
7 · 05 · 24 · 12-hour & 24-hour clock
10. Write 5:40 pm in 24-hour clock format.
5 · 40 · 24 · 12-hour & 24-hour clock
11. Write 6:30 pm in 24-hour clock format.
6 · 30 · 24 · 12-hour & 24-hour clock
12. Write 6:25 pm in 24-hour clock format.
6 · 25 · 24 · 12-hour & 24-hour clock

12 questions · Seed 57 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

12-hour & 24-hour clock

Answers and reasoning. Review before teaching.

1. 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.
2. Write 6:35 pm in 24-hour clock format.
18:35
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:35.
3. 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.
4. Write 4:45 pm in 24-hour clock format.
16:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 4 + 12 = 16, giving 16:45.
5. 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.
6. Write 1:45 pm in 24-hour clock format.
13:45
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 1 + 12 = 13, giving 13:45.
7. 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.
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 7:05 pm in 24-hour clock format.
19:05
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 7 + 12 = 19, giving 19:05.
10. Write 5:40 pm in 24-hour clock format.
17:40
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 5 + 12 = 17, giving 17:40.
11. Write 6:30 pm in 24-hour clock format.
18:30
For afternoon and evening pm times from 1:00 pm to 11:59 pm, add 12 to the hour: 6 + 12 = 18, giving 18:30.
12. 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.

12 questions · Seed 57 · Age guidance, not curriculum certification