Class 4 Maths Worksheet: 24-Hour Clock

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

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