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UNIT 5
CHAPTER 17
Lesson 17-5
 
 
 
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CHAPTER 17 ADDITION STRATEGIES AND FACTS TO 18
Lesson 17-5 ALGEBRA: Add Three Numbers in Any Order
 
 

 Find each sum.




4.

5.
6.
7.

  
Number Sense
  
8.Tony has 3 and 2 .
He wants to buy 3 .
Each  costs 10 ¢.
Does Tony have enough money to buy 3 ? Explain.
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Your child learned to add numbers in any order.
Activity:  Write the numbers 9, 8, and 1 on cards. Have your child add the numbers telling you the order he or she used to add. Then have your child add the same numbers in a different order.

 

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