Variable expressions Worksheet

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

1 a.   rx – 6, when r = 10 and x = 5.8
   
 
 
 
 
1 b.  
n – 8  , when n = 9.2
6.4
   
 
 
 
 
2 a.   d + 1, when d = 10
   
 
 
 
 
2 b.  
4 , when a = 2.2
a
   
 
 
 
 
3 a.  
d – 6.8  , when d = 3.1
4
   
 
 
 
 
3 b.  
u – 2.2  , when u = 5.2
10.5
   
 
 
 
 
4 a.   pt, when p = 8.4 and t = 6.6
   
 
 
 
 
4 b.   g4, when g = 4.9
   
 
 
 
 
5 a.   dw – 5, when d = 6.3 and w = 8.2
   
 
 
 
 
5 b.  
w – 3.9  , when w = 7.4
6.3
   
 
 
 
 
Page 2

Answer Key



Answers with decimals have been rounded to 3 decimal digits.
1 a.  -1.8

 
1 b.  0.188

 
2 a.  11

 
2 b.  1.818

 
3 a.  -0.925

 
3 b.  0.286

 
4 a.  1.8

 
4 b.  576.4801

 
5 a.  -6.9

 
5 b.  0.556

 


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