What happens to the sum when you change the order of addends in addition?

• The sum changes

• The sum stays the same

• The sum becomes zero

• The sum doubles

Which of the following is NOT a strategy for adding three numbers?

• Subtract and add

• Make a ten

• Doubles

• Count on

In the doubles strategy, what is the sum of 4 + 4?

• 6

• 8

• 12

• 10

Using the doubles plus one strategy, how can you rewrite the number 5?

• 3 + 2

• 4 + 1

• 5 + 0

• 6 - 1

What is the result of 5 + 6 + 4 using the doubles minus one strategy?

• 16

• 15

• 14

• 13

In the make a ten strategy, what is the sum of 6 + 4?

• 10

• 9

• 11

• 8

Using the doubles method, what is the sum of 3 + 3?

• 8

• 5

• 7

• 6

What is the result of 3 + 1 + 3 using the count on strategy?

• 9

• 7

• 6

• 8

Using the make a ten strategy, what is the sum of 3 + 7?

• 8

• 9

• 10

• 11

What is the result of 3 + 2 + 7 using the count on strategy?

• 13

• 12

• 11

• 10