Addition within 20

Front

What is the sum of 12 and 5?

Back

17

Front

What is 8 plus 6?

Back

14

Front

Calculate 7 + 2.

Back

9

Front

What is 2 + 5?

Back

7

Front

What is the result of 3 + 11?

Back

14

Front

What is the maximum sum you can get when adding two numbers within 20?

Back

20

Front

What is the minimum sum you can get when adding two positive numbers?

Back

2 (1 + 1)

Front

If you add 10 to a number, what is the maximum number you can start with to stay within 20?

Back

10 (10 + 10 = 20)

Front

What is the property of addition that states the order of addends does not change the sum?

Back

Commutative Property of Addition

Front

What is the property of addition that states the grouping of addends does not change the sum?

Back

Associative Property of Addition