Grade 4 Math

Time units

Practise hour-minute conversions, day-hour conversions, and mixed time answers such as 1 h 30 min.

How to solve this

  • Keep the basic facts visible: 1 h = 60 min, 1 day = 24 h, and 1 week = 7 days.
  • To convert 90 minutes, take one full hour of 60 minutes and keep the remaining 30 minutes.
  • When calculating durations, convert to one unit first if the start and end units differ.

Examples

1 h = __ min

60

2 days = __ h

48

90 min

1 h 30 min