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Elapsed time from digital clocks

This math skill teaches how to calculate elapsed time between two digital clock readings by separately determining the difference in minutes and hours, then combining them for a total elapsed time.

Learn elapsed time from digital clocks

Teaching Transcript

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How much later is the second clock?

First let's tell the time on both clocks. The first clock shows 9 o'clock, and the second clock shows 10 fifteen.

Look at the minutes first The second clock is 15 minutes later.

Now look at the hours. The second clock is 1hr later.

So the second clock is 1 hour and 15 minutes later. Or, since an hour is 60 minutes, that's 75 minutes later.

Skill Practice

Elapsed time from digital clocks

Test your understanding of elapsed time from digital clocks by practicing it! Work through the below exercises to use it in practice.