Solving 89-56 two ways.JPG - Section 1: Opening

  Solving 89-56 two ways.JPG
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Rounding to Check Addition

Unit 5: Adding & Subtracting Large Numbers
Lesson 1 of 16

Objective: SWBAT use rounding to check for reasonableness when adding multi-digit numbers.

Big Idea: Students will practice rounding both addends to find the estimated sum and both the subtrahend and the minuend to find the estimated difference.

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rounding to check
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