Class 4 Maths Worksheet: 24-Hour Clock

Maths worksheets lesson 30: The 24-hour clock and time taken · Set 21 · 40 sums

The method (Add 12 after noon): a.m. → keep the hour, written with 2 digits: 07:15. p.m. → add 12 to the hour: 3:35 p.m. = 15:35. 24-hour back to 12-hour: hour more than 12 → take away 12 and say p.m. Time taken: count whole hours, then minutes. 1 hour = 60 minutes.

1. 1.Write 3:00 a.m. in 24-hour time. (a) 15:00 (b) 05:00 (c) 03:00
2. 2.What is 03:40 in 12-hour time? (a) 5:40 a.m. (b) 3:40 p.m. (c) 3:40 a.m.
3. 3.Write 5:05 a.m. in 24-hour time. (a) 05:05 (b) 07:05 (c) 17:05
4. 4.Write 7:40 p.m. in 24-hour time. (a) 07:40 (b) 21:40 (c) 19:40
5. 5.Write 11:05 p.m. in 24-hour time. (a) 11:05 (b) 23:05 (c) 01:05
6. 6.A match starts at 06:25 and lasts 4 hours 50 minutes. At what time does it end? (a) 11:15 (b) 12:15 (c) 10:15
7. 7.A train leaves at 12:15 and reaches at 13:55. How long is the journey (in minutes)?
8. 8.Write 4:05 p.m. in 24-hour time. (a) 18:05 (b) 16:05 (c) 04:05
9. 9.A match starts at 13:10 and lasts 4 hours 30 minutes. At what time does it end? (a) 18:40 (b) 17:40 (c) 16:40
10. 10.A match starts at 11:25 and lasts 2 hours 50 minutes. At what time does it end? (a) 13:15 (b) 15:15 (c) 14:15
11. 11.A match starts at 12:25 and lasts 2 hours 20 minutes. At what time does it end? (a) 13:45 (b) 15:45 (c) 14:45
12. 12.A train leaves at 19:20 and reaches at 21:25. How long is the journey (in minutes)?
13. 13.What is 02:55 in 12-hour time? (a) 2:55 p.m. (b) 2:55 a.m. (c) 4:55 a.m.
14. 14.Write 4:20 a.m. in 24-hour time. (a) 06:20 (b) 16:20 (c) 04:20
15. 15.A match starts at 11:30 and lasts 3 hours. At what time does it end? (a) 14:30 (b) 13:30 (c) 15:30
16. 16.What is 16:10 in 12-hour time? (a) 4:10 a.m. (b) 4:10 p.m. (c) 6:10 p.m.
17. 17.What is 16:25 in 12-hour time? (a) 4:25 a.m. (b) 6:25 p.m. (c) 4:25 p.m.
18. 18.How many hours are there from 07:00 to 21:00?
19. 19.How many hours are there from 07:00 to 09:00?
20. 20.A train leaves at 08:05 and reaches at 09:00. How long is the journey (in minutes)?
21. 21.What is 11:35 in 12-hour time? (a) 11:35 p.m. (b) 11:35 a.m. (c) 1:35 a.m.
22. 22.Write 6:25 p.m. in 24-hour time. (a) 06:25 (b) 18:25 (c) 20:25
23. 23.Write 9:50 p.m. in 24-hour time. (a) 23:50 (b) 09:50 (c) 21:50
24. 24.A film is 2 hours 30 minutes long. How many minutes is that?
25. 25.A match starts at 16:00 and lasts 4 hours 25 minutes. At what time does it end? (a) 21:25 (b) 19:25 (c) 20:25
26. 26.A train leaves at 11:00 and reaches at 13:15. How long is the journey (in minutes)?
27. 27.What is 05:55 in 12-hour time? (a) 7:55 a.m. (b) 5:55 a.m. (c) 5:55 p.m.
28. 28.A train leaves at 14:30 and reaches at 17:40. How long is the journey (in minutes)?
29. 29.A match starts at 11:05 and lasts 2 hours 25 minutes. At what time does it end? (a) 13:30 (b) 12:30 (c) 14:30
30. 30.A film is 3 hours 40 minutes long. How many minutes is that?
31. 31.A match starts at 08:50 and lasts 1 hour 25 minutes. At what time does it end? (a) 10:15 (b) 09:15 (c) 11:15
32. 32.Write 8:15 p.m. in 24-hour time. (a) 22:15 (b) 08:15 (c) 20:15
33. 33.A train leaves at 11:45 and reaches at 13:35. How long is the journey (in minutes)?
34. 34.What is 10:30 in 12-hour time? (a) 12:30 a.m. (b) 10:30 a.m. (c) 10:30 p.m.
35. 35.A train leaves at 06:45 and reaches at 09:50. How long is the journey (in minutes)?
36. 36.Write 5:55 p.m. in 24-hour time. (a) 05:55 (b) 19:55 (c) 17:55
37. 37.Write 7:20 p.m. in 24-hour time. (a) 21:20 (b) 19:20 (c) 07:20
38. 38.A film is 3 hours 50 minutes long. How many minutes is that?
39. 39.What is 02:50 in 12-hour time? (a) 4:50 a.m. (b) 2:50 p.m. (c) 2:50 a.m.
40. 40.Write 1:45 a.m. in 24-hour time. (a) 13:45 (b) 03:45 (c) 01:45

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