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### Course: 3rd grade (Eureka Math/EngageNY) > Unit 2

Lesson 5: Topic E: Two- and three-digit measurement subtraction using the standard algorithm- Estimating when subtracting large numbers
- Estimate to subtract multi-digit whole numbers
- Methods for subtracting 3-digit numbers
- Break apart 3-digit subtraction problems
- Subtract on a number line
- Select strategies for subtracting within 1000
- Subtraction by breaking apart
- Subtracting 3-digit numbers (regrouping)
- Worked example: Subtracting 3-digit numbers (regrouping)
- Worked example: Subtracting 3-digit numbers (regrouping twice)
- Worked example: Subtracting 3-digit numbers (regrouping from 0)
- Subtract within 1000
- Adding and subtracting on number line
- Missing number for 3-digit subtraction within 1000
- Missing number for 3-digit addition within 1000
- Find the missing number (add and subtract within 1000)
- Three digit subtraction word problems
- Add and subtract within 1000 word problems

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