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8-6.

Write the area of the rectangle at right as a sum and as a product. 

Generic rectangle interior top left

interior top middle

interior top right

interior bottom left

interior bottom middle

interior bottom right

Find the dimensions of the large rectangle.

To show the area as a product, write the dimensions multiplied together.

To show the area as a sum, add up all of the tile pieces.

As a product area
As a sum area