7. Relate area to the operations of multiplication and addition.
a. Find the area of a rectangle with w hole-number 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 whole-number side lengths in the context of solving real-world and
mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning.
c. Use tiling to show in a concrete case that the area of a rectangle with whole-number 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 non-overlapping rectangles and
adding the areas of the non-overlapping parts, applying this technique to solve real-world problems.
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Shape Surveyor
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