Common Core Sheets 

Measurement and Data 
Geometric measurement: understand concepts of area and relate area to multiplication and to addition. 
7. Relate area to the operations of multiplication and addition. 
c. Use tiling to show in a concrete case that the area of a rectangle with wholenumber side lengths a and b + c is the sum of a × b and a × c. Use area models to represent the distributive property in mathematical reasoning. 
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