Add Time

Free interactive math game: Add Time — 35 min + 48 min. Part of the Units & Time category on MathKite.

Example problems

Taken from the generator that powers this exercise. A fresh set appears every time the page is opened, and the printable worksheet holds ten of them.

  1. Add the two durations: 25 min + 33 min
  2. Add the two durations: 43 min + 17 min
  3. 2 h 45 min + 1 h 30 min
  4. Add the two durations: 32 min + 41 min

About this exercise

Adding two lengths of time together.

How to solve it

Add the minutes and the hours separately. When the minutes reach 60 or more, carry one hour across.

Worked example

1 h 45 min plus 2 h 30 min gives 3 h 75 min, which is 4 h 15 min.

Common mistake

Carrying at 100 instead of 60. Time is not decimal, so 75 minutes becomes 1 h 15 min.