Start and end times: worked example
23 October 2026
Understanding how to work out start and end times is a key skill for 11+ maths. It helps your child read timetables and solve real-life problems with confidence.
Worked example
A film starts at 3:15pm and lasts for 1 hour and 25 minutes. What time does it finish?
Step 1: Add 1 hour to 3:15pm. That gives 4:15pm.
Step 2: Add 25 minutes to 4:15pm. 4:15pm + 25 minutes = 4:40pm.
The correct answer is 4:40pm.
Click or tap on the number line to answer
After this example, your child will be able to spot when to add hours and minutes to a given time. They will be ready to practise similar questions on working out end times from a start time and a duration.
