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UNIT 7
CHAPTER 28
Lesson 28-7
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CHAPTER 28 EXPLORING 2-DIGIT ADDITION AND SUBTRACTION
Lesson 28-7 PROBLEM SOLVING: STRATEGY Guess and Check
Problem Solving Strategy
Name ___________________________
Guess and Check
You can guess and check to help you solve problems.
Tara plants two packets of seeds. She plants a total of 23 seeds. Which two packets of seeds does she plant?
What do I already know? Tara planted _______ seeds.
What do I need to find? _______
I can guess and check.
I can carry out my plan.
No.
No.
Yes.
Does my answer make sense?
Yes.
No.
How do I know? _______
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