Elapsed Time Word Problems

Marci was babysitting for her cousin. Her cousin was gone for 3 hours and 40 minutes. Marci left at 9:57 p.m. What time did she start babysitting?

Dad says dinner will be ready in 35 minutes. It’s 5:30 p.m. now. What time will dinner be ready?

Caleb and his friends went to see a movie at 7:35 p.m. They left at 10:05 p.m. How long was the movie?

Natasha has a dentist appointment at 10:40 a.m. It should last 35 minutes. What time will she finish?

The train left the terminal at 11:20 a.m. and arrived at its destination at 2:40 p.m.

How long did the train travel?

How can we solve this word problem?

• Add 2 hours and 40 minutes to 2:40 p.m.(Count forward)

• Subtract 2 hours and 40 minutes to 11:20 a.m.(Count back)

• Add 2 hours and 20 minutes to 11:20 a.m. (Count forward)

• Subtract 2 hours and 20 minutes to 2:40 p.m.(Count back)

The train was scheduled to arrive at 5:10 p.m. However, it was delayed for 25 minutes.
What time was it when the train arrived?

What type of word problem is this?

• Start time unknown

• End time unknown

• Duration unknown

The train was scheduled to arrive at 5:10 p.m. However, it was delayed for 25 minutes.
What time was it when the train arrived?

How should we solve this word problem?

We should ​ (a)   25 minutes to 5:10 P.M.

• add

• subtract

The bus departs the bus terminal every 2 hours.

If the first bus is scheduled to depart at 10:35 a.m., when should the second bus depart?

What type of word problem is this?

• Start time unknown

• End time unknown

• Duration unknown

The bus departs the bus terminal every 2 hours.

If the first bus is scheduled to depart at 10:35 a.m., when should the second bus depart?

How should we solve this word problem?

We should ​ (a)   2 hours to 10:35 A.M.

• add

• subtract

The bus departs the bus terminal every 2 hours.

If the first bus is scheduled to depart at 10:35 a.m., when should the second bus depart?

• 12:35 a.m.

• 12:35 p.m.

• 1:35 p.m.

• 11:35 a.m.