The idea
Time calculations use 60 minutes per hour and must handle hour boundaries.
Follow these steps
- Write the start time and duration clearly.
- Count to the next whole hour, then add the remaining minutes.
- Use 24-hour notation where the context requires it.
See the method in action
Example 1
A workshop starts at 9:35 and lasts 63 minutes. When does it end?
- Count 25 minutes to the next hour, then add the remaining minutes.
- The end time is 10:38.
Example 2
A coach leaves at 10:25. It travels for 56 minutes, stops for 10 minutes and travels for 59 more minutes. The pupils then spend 32 minutes at the venue. At what time does the activity finish?
- The journey takes 56 + 10 + 59 = 125 minutes and ends at 12:30.
- Adding 32 minutes gives 13:02.
A useful shortcut
Use 24-hour notation where the context requires it.
Watch out for these
Three fresh questions
Ready to check the method? You will get three fresh, validated questions.