Example 1 · level 1
Write 01:50 in 12-hour time (with a.m./p.m.).
- 2:50 a.m.
- 1:50 a.m.
- 11:50 a.m.
- 1:50 p.m.
Show solution
- 1:50 a.m. = 01:50.
Answer: 1:50 a.m.
CLASS 4 MATHS · TIME
12-hour and 24-hour clock
For p.m. times (except 12 noon hour) add 12 to the hour. 12 midnight is 00:00.
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Worked examples
Example 2 · level 2
Write 1:20 a.m. in 24-hour time.
- 01:50
- 13:20
- 03:20
- 01:20
Show solution
- 1:20 a.m. = 01:20.
Answer: 01:20
Example 3 · level 3
The Duronto Express leaves at 12:45 and arrives at 16:15 the same day. How many minutes is the journey?
Show solution
- Journey = 3 h 30 min.
- 3 × 60 + 30 = 210 minutes.
Answer: 210 minutes