Using Pictures to Subtract

Lesson Plan - Get It!

Audio:

• What did you name your robot?

You and 7 of your friends ask your robot to clean your rooms, but it only had time to clean 5 of them before it had to recharge.

• How many rooms does it have left to clean?

You can use pictures to solve the problem.

There are 8 rooms in total, and the robot cleaned 5 of them, so you can cross those out.

• How many rooms are not crossed out?

There are 3 rooms not crossed off, so 3 is the answer!

The answer in subtraction is called the difference because you are comparing the difference of 8 rooms and 5 rooms.

• What would this math sentence look like?

8 rooms - 5 rooms = 3 rooms

8 - 5 = 3

Great work!

• Are you ready to try another one?

You bring your robot to school and put it in charge of handing out the snack to your class of 15 students. Your crazy robot accidentally gives cookies to the 3 classroom hamsters!

• How many cookies are available now for snack?

Use the picture to help you set up and solve the problem.

Yes! There are 12 cookies left for snack.

15 - 3 = 12

Keep up the great work in the Got It? section!