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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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Number Sense
Draw a picture to solve.
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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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