Lesson plan

Solve multi-digit multiplication problems by using place value understanding

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teaches Common Core State Standards 4.NBT.B.5 http://corestandards.org/Math/Content/4/NBT/B/5
teaches Common Core State Standards MP8 http://corestandards.org/Math/Practice/MP8
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Big Ideas: Decomposing factors based on place value and applying the distributive property is a reliable strategy for solving multiplication problems involving multi-digit numbers. In this lesson, students work with decomposing multi-digit numbers into place value parts as a strategy for simplifying multiplication problems. They then multiply those simpler problems and add up the partial products in order to find the total product. This strategy requires students to have a foundational understanding of properties of multiplication. Vocabulary: place value, factor, product, distributive property, decompose Special Materials: place value manipulative (optional)