Maths Library

Time Intervals and Calendars: Year 4 maths

This topic covers calculating elapsed time, durations, and dates across days, weeks, and months. Students practise computing start, end, or elapsed times across hour boundaries and using calendars to solve word problems.

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What this covers

Time Intervals and Calendars is taught in Year 4 (age 8 to 9, KS2) as a main teaching focus. It sits in the Measurement strand.

Worked example

A train departs at 09:40 and arrives at 11:15. How long was the journey

  1. From 09:40 to 10:00 is 20 minutes.
  2. From 10:00 to 11:15 is 1 hour and 15 minutes.
  3. Add the durations: 1 hour + (20 + 15) minutes = 1 hour 35 minutes.

Answer: 1 hour 35 minutes

Difficulty scale

The sheet generator offers five difficulty settings for this topic.

  1. Durations within the same hour or whole hours across a morning/afternoon.
  2. Durations crossing one hour boundary within 60 minutes.
  3. Durations spanning multiple hours and minutes with mixed am/pm.
  4. Timetable problems with 24-hour clock and elapsed time.
  5. Complex calendar and duration problems combining weeks, days, hours, and crossing month ends.

Common mistakes

  • Treating time as base 10 by subtracting digital times directly (e.g. 11:15 - 9:40 = 1.75).
  • Miscounting the number of days in months when navigating calendars.

Curriculum links

Indicative matches to National Curriculum for England. Check wording and codes against the official document.

  • Read, write, and convert time between analogue and digital 12- and 24-hour clocks.

Sample sheet and answers

Six questions at the level's usual difficulty. Open the editor to change, add or regenerate any of them.

Time Intervals and Calendars

Year 4 maths

Qs
6
Marks
18
NameDateScore / 18
1.
A film starts at 10:15 and ends at 11:40. How long is the film?
[3]
2.
A film starts at 11:15 and ends at 14:55. How long is the film?
[3]
3.
A film starts at 10:45 and ends at 12:25. How long is the film?
[3]
4.
A film starts at 9:30 and ends at 10:45. How long is the film?
[3]
5.
A film starts at 9:30 and ends at 10:55. How long is the film?
[3]
6.
A film starts at 9:15 and ends at 12:40. How long is the film?
[3]

Answer key

  1. 1 h 25 minFrom 10:15 to 11:15 is 1 hour; Then 25 more minutes
  2. 3 h 40 minFrom 11:15 to 14:15 is 3 hours; Then 40 more minutes
  3. 1 h 40 minFrom 10:45 to 11:45 is 1 hour; Then 40 more minutes
  4. 1 h 15 minFrom 9:30 to 10:30 is 1 hour; Then 15 more minutes
  5. 1 h 25 minFrom 9:30 to 10:30 is 1 hour; Then 25 more minutes
  6. 3 h 25 minFrom 9:15 to 12:15 is 3 hours; Then 25 more minutes