Changing the 24-hour Clock to the 12-Hour Clock
Maths: Year 3 & 4 National Curriculum, topic 6.2.3
Changing from the 24-Hour to the 12-Hour Clock
You may be asked to convert a time from the 24-hour clock to the 12-hour clock.
Example problem
- What is 16.05 in the 12-hour clock?
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Change to the 12-hour clock
- 16 is greater than 12, so 16.05 is in the afternoon (pm).
- To find out the hour, subtract 12 from 16.
- 16 − 12 = 4
- So the time is 4.05pm in the 12-hour clock.
Example problem
- What is 00.00 in the 12-hour clock?
Change to the 12-hour clock
- The 24-hour clock starts at midnight.
- So 00.00 is 12am in the 12-hour clock.
Test yourself on Changing the 24-hour Clock to the 12-Hour Clock
What's 13.36 in the 12-hour clock?
What's 06.06 in the 12-hour clock?
Ben is playing a tennis match at 19.30.
What is this time in the 12-hour clock?The film starts at 10.30.
What time is this in the 12-hour clock?