Class 4 Maths Worksheet: 24-Hour Clock
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.
NameDateTime takenScore ___ / 40
- 1.Write 1:55 a.m. in 24-hour time. (a) 13:55 (b) 03:55 (c) 01:55
- 2.How many hours are there from 06:00 to 21:00?
- 3.A train leaves at 14:15 and reaches at 15:40. How long is the journey (in minutes)?
- 4.A film is 3 hours 30 minutes long. How many minutes is that?
- 5.A film is 1 hour 55 minutes long. How many minutes is that?
- 6.Write 3:05 p.m. in 24-hour time. (a) 03:05 (b) 17:05 (c) 15:05
- 7.A film is 3 hours 15 minutes long. How many minutes is that?
- 8.Write 6:40 p.m. in 24-hour time. (a) 18:40 (b) 20:40 (c) 06:40
- 9.How many hours are there from 05:00 to 12:00?
- 10.How many hours are there from 11:00 to 21:00?
- 11.How many hours are there from 11:00 to 13:00?
- 12.What is 04:30 in 12-hour time? (a) 4:30 p.m. (b) 4:30 a.m. (c) 6:30 a.m.
- 13.Write 6:50 a.m. in 24-hour time. (a) 08:50 (b) 18:50 (c) 06:50
- 14.Write 4:05 a.m. in 24-hour time. (a) 16:05 (b) 04:05 (c) 06:05
- 15.A match starts at 08:40 and lasts 2 hours 5 minutes. At what time does it end? (a) 10:45 (b) 09:45 (c) 11:45
- 16.How many hours are there from 05:00 to 15:00?
- 17.A match starts at 17:20 and lasts 1 hour 30 minutes. At what time does it end? (a) 18:50 (b) 19:50 (c) 17:50
- 18.A train leaves at 07:35 and reaches at 08:00. How long is the journey (in minutes)?
- 19.Write 11:30 p.m. in 24-hour time. (a) 01:30 (b) 23:30 (c) 11:30
- 20.How many hours are there from 09:00 to 15:00?
- 21.What is 15:15 in 12-hour time? (a) 5:15 p.m. (b) 3:15 a.m. (c) 3:15 p.m.
- 22.Write 3:50 p.m. in 24-hour time. (a) 03:50 (b) 17:50 (c) 15:50
- 23.A train leaves at 12:25 and reaches at 15:15. How long is the journey (in minutes)?
- 24.A match starts at 09:15 and lasts 3 hours 40 minutes. At what time does it end? (a) 11:55 (b) 12:55 (c) 13:55
- 25.A film is 3 hours 40 minutes long. How many minutes is that?
- 26.What is 21:45 in 12-hour time? (a) 11:45 p.m. (b) 9:45 p.m. (c) 9:45 a.m.
- 27.A film is 2 hours 15 minutes long. How many minutes is that?
- 28.Write 3:20 a.m. in 24-hour time. (a) 05:20 (b) 03:20 (c) 15:20
- 29.A train leaves at 12:30 and reaches at 13:20. How long is the journey (in minutes)?
- 30.Write 6:45 p.m. in 24-hour time. (a) 20:45 (b) 18:45 (c) 06:45
- 31.A film is 4 hours 30 minutes long. How many minutes is that?
- 32.Write 4:25 p.m. in 24-hour time. (a) 16:25 (b) 18:25 (c) 04:25
- 33.A match starts at 09:10 and lasts 4 hours 30 minutes. At what time does it end? (a) 13:40 (b) 12:40 (c) 14:40
- 34.Write 5:25 p.m. in 24-hour time. (a) 05:25 (b) 17:25 (c) 19:25
- 35.A film is 4 hours 5 minutes long. How many minutes is that?
- 36.Write 4:10 p.m. in 24-hour time. (a) 04:10 (b) 16:10 (c) 18:10
- 37.Write 10:10 p.m. in 24-hour time. (a) 00:10 (b) 22:10 (c) 10:10
- 38.What is 20:25 in 12-hour time? (a) 8:25 p.m. (b) 10:25 p.m. (c) 8:25 a.m.
- 39.What is 23:05 in 12-hour time? (a) 11:05 p.m. (b) 11:05 a.m. (c) 1:05 p.m.
- 40.A train leaves at 13:30 and reaches at 15:40. How long is the journey (in minutes)?
Answer key
- 01:55
- 15
- 85
- 210
- 115
- 15:05
- 195
- 18:40
- 7
- 10
- 2
- 4:30 a.m.
- 06:50
- 04:05
- 10:45
- 10
- 18:50
- 25
- 23:30
- 6
- 3:15 p.m.
- 15:50
- 170
- 12:55
- 220
- 9:45 p.m.
- 135
- 03:20
- 50
- 18:45
- 270
- 16:25
- 13:40
- 17:25
- 245
- 16:10
- 22:10
- 8:25 p.m.
- 11:05 p.m.
- 130
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