Adding and Subtracting Time Intervals

Adding And Subtracting Time Intervals
Introduction

Time intervals show the amount of time between two events. Learning how to add and subtract time intervals helps calculate durations, schedules, and daily activiti...

Liam and Noah are doing their homework and want to find out how much time they spent on math and English together.

They spent 1 hour and 20 minutes on math and 55 minutes on English. First, they add the minutes and then the hours, getting 1 hour and 75 minutes.

Because 60 minutes equals 1 hour, they change 75 minutes into 1 hour and ...