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UNIT 7
CHAPTER 28
Lesson 28-1
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CHAPTER 28 EXPLORING 2-DIGIT ADDITION AND SUBTRACTION
Lesson 28-1 HANDS ON Add and Subtract Tens
Add and Subtract Tens
Name ___________________________
You can use
to add or subtract tens.
Add
Subtract
Use
. Count on to add tens. Count back to subtract tens.
1.
2.
3.
4.
5.
How can you use
to show
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