3.GM.7
Multiply side lengths to find areas of rectangles with whole number side lengths in the context of solving real-world and mathematical problems.
Khan Academy ResourcesArea: FAQFind a missing side length when given area Area of rectanglesArea and the distributive propertyDecompose figures to find areaTransition from unit squares to area formulaCompare areas by multiplyingCompare area and perimeterArea and the distributive propertyComparing areas and perimeters of rectanglesComparing areas of plots of landMeasuring rectangles with different unit squaresFinding missing side when given area

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