Adding/Subtracting Within 20

Front

10 + 8 = ?

Back

18

Front

12 - 4 = ?

Back

8

Front

15 - 5 = ?

Back

10

Front

20 - 10 = ?

Back

10

Front

14 - 5 = ?

Back

9

Front

What is addition?

Back

Addition is combining two or more numbers to get a total.

Front

What is subtraction?

Back

Subtraction is taking one number away from another.

Front

What is the sum of 5 and 3?

Back

8

Front

What is the difference between 9 and 4?

Back

5

Front

If you have 7 apples and you eat 2, how many do you have left?

Back

5