Fluency Addition/ Subtraction within 20

Front

16 + 2 = ?

Back

18

Front

16 - 3 = ?

Back

13

Front

17 - 7 = ?

Back

10

Front

16 - 0 = ?

Back

16

Front

16 - 4 = ?

Back

12

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 10 and 5?

Back

15

Front

What is the difference between 15 and 5?

Back

10

Front

If you have 8 apples and you add 2 more, how many apples do you have?

Back

10