Unit 3, Lesson 10# Use the distributive property as a strategy to multiply and divide

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In this lesson, students multiply and divide new facts using the distributive property (the "break apart and distribute" strategy) to break a new fact into a sum of two known facts. For example, they multiply 6 × 8 by finding (6 × 5) + (6 × 3) and divide 64 ÷ 8 by finding (40 ÷ 8) + (24 ÷ 8). Along the way, they represent their calculations with arrays and number bonds.