Add and Subtract within 20

Front

17 - 9 =

Back

8

Front

14 - 7 =

Back

7

Front

9 + 3 =

Back

12

Front

19 + 1 =

Back

20

Front

12 - 12 =

Back

0

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

Front

What is the sum of 5 and 4?

Back

9

Front

What is the difference between 10 and 3?

Back

7

Front

If you have 8 apples and you eat 3, how many do you have left?

Back

5