Estimation - an introduction

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

Objective: SWBAT use models to estimate an answer when adding 2, two-digit numbers.

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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Subject(s):
Math, Number Sense and Operations, estimate, addition, Operations
  50 minutes
100 0749
 
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