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UNIT 5
CHAPTER 18
Lesson 18-4
 
 
 
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CHAPTER 18 SUBTRACTION STRATEGIES AND FACTS TO 18
Lesson 18-4 HANDS ON/ALGEBRA: Relate Addition and Subtraction
 
 

  
Relate Addition and Subtraction
  
Name ___________________________

 Related facts use the same numbers.

Addition and subtraction using models






This cube train shows the numbers 4, 9, and 13.


 Use  and . Add. Then subtract. Write the related subtraction facts.

1.

Add.
Subtract.
Write the related subtraction facts.
8


5
____ ____ ____
2.

Add.
Subtract.
Write the related subtraction facts.
9
____ ____ ____
6
____ ____ ____
3. If you know what related subtraction facts do you know?


 

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