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UNIT 3
CHAPTER 10
Lesson 10-4
 
 
 
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CHAPTER 10 SUBTRACTION STRATEGIES
Lesson 10-4 HANDS ON Related Subtraction Facts
 
 

 Subtract. Use .


Subtracting using models


6.


7.
8.
9.
10.
11.
12.
13.
14.
15.

  
Mental Math
  
Count on to solve.
16.There are 6 .
There are 3 .
How many are there in all?
_______ caps
_______ + _______ = _______
17.Jan hits 9 .
Ira hits 2 more. How many  do they hit in all?
_______ balls
_______ + _______ = _______

  
Your child learned about related facts such as 11 - 2 = 9 and 11 - 9 = 2.
Activity:  Use 12 small objects such as cereal pieces. Make two groups. Cover one group with your hand and have your child tell you a subtraction fact for the model. Repeat by covering the other group.

 

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