Addition
Subtraction
Word Problems
Signs
100

3+2

5

100

7-4

3

100

There are 12 chairs in a classroom. Seven children are sitting down. How many chairs are empty?

5 chairs are empty 

100

+

Addition 

200

7+7

14

200

9-5

9

200

A shelf has 14 books. Six are checked out. Then 2 books are returned. How many books are on the shelf now?

There are 10 books on the shelf 

200

-

Subtraction 

300

8+10

18

300

19-6

13

300

There are 9 fish in one tank and 7 fish in another. The store moves 4 fish from the first tank to the second. How many fish are in each tank now?

The first tank has 13 fish. The second tank has 3 fish 

300
=

Equal

400

12+7

19

400

17-6

11

400
  1. Ella says, "If I have 8 balloons and get 4 more, then give away 3, I will have 10 balloons." Is she correct? Explain.

She is incorrect. She will have 9 balloons 

400

Does addition get bigger or smaller?

Bigger

500

22+9

31

500

30-6

24

500

I am thinking of a number. If you add 5, you get 12. What is my number?

500

Does subtraction get bigger or smaller?

Smaller
M
e
n
u