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### Course: 2nd grade > Unit 3

Lesson 2: Strategies for adding within 100- Breaking apart 2-digit addition problems
- Break apart 2-digit addition problems
- Adding 53+17 by making a group of 10
- Adding by making a group of 10
- Add 2-digit numbers by making tens
- Strategies for adding 2-digit numbers
- Select strategies for adding within 100

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