# Estimation - an introduction

Unit 17: Getting Better at Addition and Subtraction
Lesson 3 of 12

## Big Idea: Estimation allows students to reflect on the accuracy of their own solutions. It provides a perspective for critiquing the chosen strategies and outcomes when solving problems.

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Standards:
Subject(s):
Math, Number Sense and Operations, estimate, addition, Operations
50 minutes

### Beth McKenna

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