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UNIT 3
CHAPTER 10
Lesson 10-3
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CHAPTER 10 SUBTRACTION STRATEGIES
Lesson 10-3 Estimate Differences
Estimate the difference.
Subtract to check.
6.
7.
more than 5.
less than 5.
8.
more than 8.
less than 8.
9.
more than 6.
less than 6.
10.
Tyler subtracts 7 - 3 like this.
Why is Tyler wrong? Make it right.
Your child estimated differences.
Activity:
Ask your child how he or she would estimate if 9 - 2 would be more than 9 or less than 9.
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