Addition and Subtraction Within 20

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 taking one number away from another.

Front

What does it mean to 'count on' in addition?

Back

Counting on means starting from the first number and counting up to find the total.

Front

What is the sum of 9 and 4?

Back

13

Front

What is the sum of 11 and 5?

Back

16

Front

What is 15 minus 7?

Back

8

Front

What is 14 minus 8?

Back

6

Front

What is the sum of 8 and 3?

Back

11

Front

If you have 10 apples and you add 5 more, how many apples do you have?

Back

15 apples.

Front

If you have 12 candies and you give away 4, how many candies do you have left?

Back

8 candies.