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UNIT 7
CHAPTER 28
Lesson 28-6
 
 
 
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CHAPTER 28 EXPLORING 2-DIGIT ADDITION AND SUBTRACTION
Lesson 28-6 Estimate Sums and Differences
 
 

 Solve. Circle yes or no.





6.Will be less than 100?
Yes.
No.
7.Will be greater than 55?
Yes.
No.
8.Will be greater than 20?
Yes.
No.
9.Will be less than 30?
Yes.
No.
10.Will be greater than 70?
Yes.
No.

  
Estimation
  
11.Will be less than 40? Explain.
_______

  
Your child estimated sums and differences.
Activity:  Ask your child, "Will be greater than 60?" Have your child explain.

 

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