Adding and subtracting within 20

Front

3 - 1 = ?

Back

2

Front

7 + 6 = ?

Back

13

Front

13 - 3 = ?

Back

10

Front

10 + 10 = ?

Back

20

Front

15 + 4 = ?

Back

19

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 4?

Back

9

Front

What is the difference between 8 and 3?

Back

5

Front

If you have 10 apples and give away 2, how many do you have left?

Back

8