Elapsed Time

Front

What is elapsed time?

Back

Elapsed time is the amount of time that passes from the start of an event to the end of that event.

Front

How do you calculate elapsed time?

Back

To calculate elapsed time, subtract the start time from the end time.

Front

If school starts at 9:00 a.m. and I live 20 minutes away, what time should I leave if I take 10 minutes to eat breakfast?

Back

You should leave at 8:30 a.m.

Front

Janet went to the deli at 1:05 p.m. and returned at 1:47 p.m. How long were they gone?

Back

They were gone for 42 minutes.

Front

If it is 5:10 p.m. now and Kate worked on her homework for 52 minutes, what time did she start?

Back

Kate started at 4:18 p.m.

Front

David started his homework at 4:30 p.m. and finished at 5:15 p.m. How long did he work?

Back

David worked for 45 minutes.

Front

Sam begins cleaning his room at 5:15 p.m. and takes 10 minutes to pick up toys, 20 minutes to dust, and 5 minutes to sweep. What time is he done cleaning?

Back

Sam is done cleaning at 5:50 p.m.

Front

What is the difference between start time and end time?

Back

Start time is when an event begins, and end time is when the event finishes.

Front

What is a time interval?

Back

A time interval is the duration of time between two events.

Front

How do you convert minutes to hours?

Back

To convert minutes to hours, divide the number of minutes by 60.