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### Course: 2nd grade > Unit 4

Lesson 3: Strategies for subtracting within 1,000- Subtracting 1, 10, or 100
- Subtracting 1s, 10s, and 100s
- Subtracting 3-digit numbers (no regrouping)
- Subtract 10s and 100s (no regrouping)
- Subtracting with place value blocks (regrouping)
- Subtract within 1,000 using place value blocks
- Adding and subtracting on number line
- Subtract on a number line

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