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Time and measurement questions appear regularly on the SET 11+ maths papers. You need to convert between units, read timetables, calculate time intervals, and work with metric and imperial measures. On Stage 2, clear working is essential, especially when converting units. This lesson covers all the skills you need.
| 12-hour | 24-hour |
|---|---|
| 12:00 am (midnight) | 00:00 |
| 7:30 am | 07:30 |
| 12:00 pm (noon) | 12:00 |
| 3:45 pm | 15:45 |
| 9:15 pm | 21:15 |
| 11:59 pm | 23:59 |
To convert pm times to 24-hour: add 12 to the hour.
To convert 24-hour times after 12:00 to pm: subtract 12 from the hour.
Count from the start time to the end time in stages.
A bus departs at 09:47 and arrives at 11:23. How long is the journey?
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