This is a worksheet with a review of the lesson 11.1 in the 3rd grade Go Math series: Model PerimeterCan be used as a quiz, formative assessment, review, extra help, or homework.3.MD.D.8 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..Answer Key is included.Compl