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Finding Unknown Dimensions for Area and Perimeter

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Finding Unknown Dimensions for Area and Perimeter

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Find missing side of a rectangle with perimeter 

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Find missing side of a rectangle with perimeter 

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PS 13 Multiplication and Division Number Line

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PS 13 Multiplication and Division Number Line

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Fraction and Decimal Number Line Journal

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Area Model and Ratio Tables

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When one factor doubles, so does the product. When one factor is cut in half, so is the product.

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Strategies for Solving Big Multiplication Problems 

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Strategies for Solving Big Multiplication Problems 

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Multiplication arrays are a lot like the area model. Break the numbers into tens and ones, multiply them, then add it all together.

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Build the arrays with base 10 blocks, then add up all of the pieces.

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Looking for Smaller Arrays