Variable expressions Worksheet

Find the value of the expressions for the given values of the variable(s).

1 a.   r2, when r = 4
   
 
 
 
 
1 b.   w – 4, when w = 3
   
 
 
 
 
2 a.   9 – r, when r = 10
   
 
 
 
 
2 b.   p2, when p = 4
   
 
 
 
 
3 a.  
g , when g = 2
7
   
 
 
 
 
3 b.   6 a, when a = 6
   
 
 
 
 
4 a.   r – 9, when r = 9
   
 
 
 
 
4 b.   3 n k, when n = 2 and k = 10
   
 
 
 
 
5 a.   c + z + 9, when c = 6 and z = 4
   
 
 
 
 
5 b.   b + y + 8, when b = 10 and y = 9
   
 
 
 
 
Page 2

Answer Key

1 a.  16

 
1 b.  -1

 
2 a.  -1

 
2 b.  16

 
3 a.  2/7

 
3 b.  36

 
4 a.  0

 
4 b.  60

 
5 a.  19

 
5 b.  27

 


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