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UNIT 3
CHAPTER 10
Lesson 10-1
 
 
 
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CHAPTER 10 SUBTRACTION STRATEGIES
Lesson 10-1 Count Back 1 or 2
 
 

 Count back to subtract.




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20.

  
Number Sense
  

Draw a picture to solve.
21.Jen's family has 4 people. Mark's family has 1 fewer than Jen's.
How many people are in Mark's family?
Mark's family has _______ people.

  
Your child used a number line to count back to subtract.
Activity:  Write 10 – 1. Have your child use the number line to subtract.

 

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