Area / Perimeter Worksheet
1 a. Write a number sentence for the total area, thinking of one rectangle or two.
 
26
10    
1 b.
Write a number sentence for the total area, thinking of one rectangle or two.
 
710
5    


____ × ( ____ + ____ )  =  _____ × _____  +  _____ × _____   =  _______
area of the
whole rectangle		 area of the
first part		 area of the
second part
2 a. Find the missing side length,
when the area is 20 square units.

5
? 
A = 20 square units
2 b. Find the area of the rectangle.

8
3   
3 a. Find the area and perimeter of this rectangle.
 
        
        
        
3 b. Draw a rectangle with an area of 36 square units and perimeter of 24 units.
 
          
          
          
          
          
          
          
          
          
          
4 a. Draw a rectangle with an area of 12 square units and perimeter of 14 units.
 
          
          
          
          
          
          
          
          
          
          
4 b. Draw a rectangle with an area of 16 square units and perimeter of 16 units.
 
          
          
          
          
          
          
          
          
          
          
5 a. Write a number sentence for the total area, thinking of one rectangle or two.
 
73
6    
5 b. Find the area of the rectangle.

5
9   
6 a. Draw a rectangle with an area of 45 square units and perimeter of 28 units.
 
          
          
          
          
          
          
          
          
          
          
6 b. Draw a two-part rectangle whose area matches the number sentence.
 

 


9 × (3 + 3)  =  _____ × _____  +  _____ × _____   =  ________
area of the
whole rectangle		 area of the
first part		 area of the
second part
7 a. Find the perimeter of the rectangle.

7
7   
7 b.
Find the perimeter of a square with side length 8.
8 a. Find the area and perimeter of this rectangle.
 
  
  
  
  
  
  
  
8 b. Find the area and perimeter of the shape.
 
1
  67
   3
9 a. Write a number sentence for the total area, thinking of one rectangle or two.
 
78
4    
9 b. Find the perimeter of the square.

5
5   
10 a. Find the area and perimeter of this rectangle.
 
  
  
  
  
  
  
10 b. Write a number sentence for the total area, thinking of one rectangle or two.
 
87
3    
Page 2

Answer Key

1 a.  10 × (2 + 6) = 10 × 2 + 10 × 6 = 80

 
1 b.  5 × (7 + 10) = 5 × 7 + 5 × 10 = 85

 
2 a.  4

 
2 b.  24 square units

 
3 a.  The area is 24 square units and the perimeter is 22 units.

 
3 b.  The rectangle has 6 rows and 6 columns (it is a square).

 
4 a.  The rectangle has 3 rows and 4 columns or vice versa.

 
4 b.  The rectangle has 4 rows and 4 columns (it is a square).

 
5 a.  6 × (7 + 3) = 6 × 7 + 6 × 3 = 60

 
5 b.  45 square units

 
6 a.  The rectangle has 9 rows and 5 columns or vice versa.

 
6 b. 
33
9    


9 × (3 + 3) = 9 × 3 + 9 × 3 = 54

 
7 a.  28

 
7 b.  32

 
8 a.  The area is 14 square units and the perimeter is 18 units.

 
8 b.  The area is 30 and the perimeter is 34.

 
9 a.  4 × (7 + 8) = 4 × 7 + 4 × 8 = 60

 
9 b.  20

 
10 a.  The area is 12 square units and the perimeter is 16 units.

 
10 b.  3 × (8 + 7) = 3 × 8 + 3 × 7 = 45

 

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