## Estimating Sums or Differences Score Sheet.docx - Section 3: Group or Partner Activity

Estimating Sums or Differences Score Sheet.docx

# Estimating Sums and Differences of Whole Numbers

Unit 11: Adding and Subtracting Whole Numbers
Lesson 2 of 11

## Big Idea: If students do not need an exact answer, they will use place value to round numbers to find sums and differences.

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Standards:
Subject(s):
Math, Number Sense and Operations, rounding, estimation, Operations
60 minutes

### Rose Monroe

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