7. Relate area to the operations of multiplication and addition.
a. Find the area of a rectangle with w holenumber side lengths by tiling it, and show that the area is the same as would be
found by multiplying the side lengths.
b. Multiply side lengths to nd areas of rectangles with wholenumber side lengths in the context of solving realworld and
mathematical problems, and represent wholenumber products as rectangular areas in mathematical reasoning.
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 x b and a x c. Use area models to represent the distributive property in mathematical reasoning.
d. Recognize area as additive. Find areas of rectilinear gures by decomposing them into nonoverlapping rectangles and
adding the areas of the nonoverlapping parts, applying this technique to solve realworld problems.
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Shape Surveyor


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