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Summary
Discusses estimating, regrouping, place value, and more. Full description
Table of Contents:
- What is subtraction?
- One-digit subtraction
- Subtraction terms
- Addition and subtraction
- Subtraction and zero
- Subtraction properties
- Place value
- Two-digit subtraction
- Regrouping numbers
- Two-digit regrouping
- Three-digit subtraction
- Three-digit regrouping
- Greater numbers
- Regrouping greater numbers
- Rounding to estimate
- Estimation vs. exact difference
- Mental subtraction
- Subtracting time
- Subtraction key words
- Word problems.