3.MD.1-4

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 Leigh gets up at 6:15 a.m. and eats breakfast at 7:20 a.m., how do you find out how long she waited?

Back

Calculate the difference between 7:20 a.m. and 6:15 a.m. to find the elapsed time.

Front

What is the weight limit for Norm's luggage?

Back

Norm's luggage needs to weigh 40kg or less.

Front

If Norm's luggage weighs 58kg, how do you find out how much he needs to remove?

Back

Subtract 40kg from 58kg to find out how much he needs to remove.

Front

What is the total time Jimmy walked if he started at 8:15 a.m. and finished at 11:00 a.m.?

Back

The total time is 2 hours and 45 minutes.

Front

How do you determine the number of items that meet a specific measurement?

Back

Count the items that are equal to or less than the specified measurement.

Front

What time does Anya's music lesson end if it starts at 3:30 p.m. and lasts for 45 minutes?

Back

The lesson ends at 4:15 p.m.

Front

What is a simple way to check if a time duration is correct?

Back

Re-add the start time and the duration to see if it matches the end time.

Front

What does it mean if an item is '2 inches long'?

Back

It means the item measures exactly 2 inches from one end to the other.