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 an event starts at 2:00 p.m. and ends at 3:30 p.m., how long did the event last?

Back

1 hour and 30 minutes.

Front

What does it mean to add time?

Back

Adding time means to combine hours and minutes to find a new time.

Front

If you add 45 minutes to 3:15 p.m., what time is it?

Back

3:15 p.m. + 45 minutes = 4:00 p.m.

Front

What does it mean to subtract time?

Back

Subtracting time means to take away hours and minutes from a given time.

Front

If you subtract 30 minutes from 5:00 p.m., what time is it?

Back

5:00 p.m. - 30 minutes = 4:30 p.m.

Front

What is a word problem?

Back

A word problem is a math problem that is presented in the form of a story or real-life situation.

Front

How can you identify the start time in a word problem?

Back

Look for phrases like 'started at' or 'began at' to find the start time.

Front

What is a common phrase that indicates the end time in a word problem?

Back

Phrases like 'finished at' or 'ended at' indicate the end time.