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ACTIVITY

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3 Squares Across: Perimeter

Here is a row of 3 squares. The squares measure 1 centimeter by 1 centimeter. The perimeter of the rectangle they make is 8 centimeters.

A row of 3 squares.

Make a rectangle with 2 rows of 3 squares. What is the perimeter of this rectangle?

Two rows of 3 squares.

  • 1 Continue adding rows of squares. Find the perimeter of each rectangle. Fill in the table below.

    Number of Rows Perimeter (cm) Arithmetic Expression
    1 8  
    2    
    3    
    4    
    5    
    6    
         
    10    
         
    15    
         
    20    
         
    100    
    n    

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Table of Contents

Investigations 3 in Number, Data, and Space®, Student Activity Book Unit 1 Puzzles, Clusters, and Towers Unit 2 Prisms and Solids Unit 3 Rectangles, Clocks, and Tracks Unit 4 How Many People and Teams? Unit 5 Temperature, Height, and Growth Unit 6 Between 0 and 1 Unit 7 Races, Arrays, and Grids Unit 8 Properties of Polygons