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### Course: 2nd grade > Unit 4

Lesson 2: Strategies for adding within 1,000- Adding 3-digit numbers (no regrouping)
- Add 10s and 100s (no regrouping)
- Addition using groups of 10 and 100
- Add using groups of 10 and 100
- Breaking apart 3-digit addition problems
- Break apart 3-digit addition problems
- Select strategies for adding within 1000

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