## tens to nines work2.docx - Section 1: Warm Up

tens to nines work2.docx

# From Tens to Nines

Unit 2: Adding and Subtracting the Basics
Lesson 12 of 18

## Big Idea: Fluency in adding and subtracting is expected during second grade. New strategies to add and subtract efficiently provide students with a variety of options to increase fluency.

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55 minutes

### Beth McKenna

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