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## Get ready for 4th grade

### Course: Get ready for 4th grade > Unit 2

Lesson 4: Adding and subtracting within 1,000- Using place value to add 3-digit numbers: part 1
- Using place value to add 3-digit numbers: part 2
- Adding 3-digit numbers
- Add within 1000
- Worked example: Subtracting 3-digit numbers (regrouping)
- Subtracting 3-digit numbers (regrouping)
- Worked example: Subtracting 3-digit numbers (regrouping from 0)
- Subtract within 1000

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# Add within 1000

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