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UNIT 7
CHAPTER 27
Lesson 27-3
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CHAPTER 27 ADDITION AND SUBTRACTION TO 20
Lesson 27-3 HANDS ON/ALGEBRA: Relate Addition and Subtraction
Relate Addition and Subtraction
Name ___________________________
Knowing related facts can help you add and subtract.
Use
and
. Add. Then subtract. Write the related subtraction facts.
1.
Add
Subtract
Related subtraction facts
8
5
2.
Add
Subtract
Related subtraction facts
9
___
___ = ___
7
___
___ = ___
3.
Add
Subtract
Related subtraction facts
7
___
___ = ___
8
___
___ = ___
4.
Write the related subtraction facts.
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