Lesson: Elapsed Time Across am and pm

In this lesson, we will learn how to calculate elapsed time by adding or subtracting the start time and the end time in the same or different time formats of am and pm using a number line.

Sample Question Videos

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Worksheet: 17 Questions • 5 Videos

Q1:

In a large shopping center, three security teams go on three different patrols. The first team’s patrol takes 6 hours, the second team’s patrol takes 3 hours, and the third team take 4 hours. As soon as a patrol is finished they begin it again. If, at 2:00 am, all teams started a patrol simultaneously, what is the first time that all the teams finish a patrol together?

Q2:

Isabella arrived at the cinema at . Her friend Anthony arrived at pm. Who arrived first?

Q3:

When it is 3 o’clock at night, what will the clock look like?

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