Math Standard 3.MD.D.8

Major Standards
Supporting Standards
Additional Standards

Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths, finding an unknown side length, and exhibiting rectangles with the same perimeter and different areas or with the same area and different perimeters.

Part of Additional Cluster 3.MD.D

View 28 lessons for this standard

View 43 activities for this standard

Prerequisites

3rd Grade

3.MD.C.5

Recognize area as an attribute of plane figures and understand concepts of area measurement.

3.MD.C.5.A

A square with side length 1 unit, called "a unit square," is said to have "one square unit" of area, and can be used to measure area.

3.MD.C.5.B

A plane figure which can be covered without gaps or overlaps by n unit squares is said to have an area of n square units.

Upcoming Standards

4th Grade

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.