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## Early math review

### Unit 5: Lesson 6

Strategies for adding and subtracting within 100- Adding 53+17 by making a group of 10
- Add 2-digit numbers by making tens
- Adding by making a group of 10
- Add 2-digit numbers by making tens 2
- Strategies for adding 2-digit numbers
- Select strategies for adding within 100
- Addition and subtraction with number lines
- Add within 100 using a number line
- Subtract within 100 using a number line

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# Add 2-digit numbers by making tens 2

CCSS.Math: 2.NBT.B.5

## Problem

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