## Explaining Thinking - Section 2: You are the Teacher

Explaining Thinking

# Estimation as a Strategy for Checking Work

Unit 18: Strategies That Work
Lesson 3 of 16

## Big Idea: Estimation can tell us if we are close in our answers to math problems. If we take the time to use it, we can see if our answer is in the right ballpark.

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Standards:
Subject(s):
Math, Number Sense and Operations, Operations , addition, subtraction, estimation, review
40 minutes

### Beth McKenna

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