Addition and Subtraction within 20

Front

9 + ? = 10

Back

1

Front

3 + ? = 10

Back

7

Front

? - 12 = 1

Back

13

Front

5 - 4 = ?

Back

1

Front

6 + 9 = ?

Back

15

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 removing one from the other.

Front

What is the sum of 2 and 3?

Back

5

Front

What is the difference between 8 and 5?

Back

3

Front

If you have 4 apples and you add 3 more, how many apples do you have?

Back

7 apples