4.MD.A.3

6b9cbaef-d7cc-11e8-824f-0242ac160002 6b9f3cb3-d7cc-11e8-824f-0242ac160002 6b9ea608-d7cc-11e8-824f-0242ac160002 4.MD.A 4.MD.A.3

Apply the area and perimeter formulas for rectangles in real world and mathematical problems. <em>For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.</em>

Propose a mapping

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