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Mathematics | Grade : 3
Domain - Measurement and Data
Cluster - Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
[3.MD.C.7.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.
[4.MD.A.3] -
Apply the area and perimeter formulas for rectangles in real-world and mathematical problems.
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. (Note: When finding areas of rectangular regions answers will be in square units. For example, the area of a 1 cm x 1 cm rectangular region will be 1 square centimeter (1 cm2, students are not expected to use this notation.) When finding the perimeter of a rectangular region answers will be in linear units. For example, the perimeter of the region is: 1cm + 1cm + 1cm +1cm = 4 cm or 2(1cm) + 2(1cm) = 4 cm).
[5.NF.B.4] -
Apply and extend previous understandings of multiplication to multiply a fraction or whole number by a fraction.