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Topic 1Understand Multiplication and DivisionTopic 2Use Patterns for Foundational Multiplication FactsTopic 3Build on Known Multiplication FactsTopic 4Use Multiplication to DivideTopic 5Quadrilaterals, Area, and PerimeterTopic 6Place Value: Numbers to 10,000Topic 7Add Multi-Digit Whole NumbersTopic 8Subtract Multi-Digit Whole NumbersTopic 9Use Equations to Solve ProblemsTopic 10Understand Fractions as NumbersTopic 11Fraction Equivalence and ComparisonTopic 12Collect, Represent, and Interpret DataTopic 13Time, Customary and Metric Measurement

DifficultyGentleStandardChallenge

TOPIC 8 · LESSON 8-1

Mental Math: Subtraction

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