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Grade 3Geometry

3.MD.C.7

Connect area to multiplication — and break odd shapes into rectangles.

Worksheets for this standard 1 topic

Area of Rectangles4 ways
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The standard, officially

Relate area to the operations of multiplication and addition.

This standard has parts
a
Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.3.MD.C.7a
b
Multiply side lengths to find 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.3.MD.C.7b
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 × b and a × c. Use area models to represent the distributive property in mathematical reasoning.3.MD.C.7c
d
Recognize area as additive. Find areas of rectilinear figures by decomposing them into non-overlapping rectangles and adding the areas of the non-overlapping parts, applying this technique to solve real world problems.3.MD.C.7d