Variable expressions Worksheet

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

1 a.  
–7 , when x = 3
x
   
 
 
 
 
1 b.   –8 r w, when r = –6 and w = 3
   
 
 
 
 
2 a.   r + z, when r = 8 and z = 7
   
 
 
 
 
2 b.   b3, when b = –5
   
 
 
 
 
3 a.   1 – w, when w = 7
   
 
 
 
 
3 b.  
2 , when w = 10
w
   
 
 
 
 
4 a.   zc – 6, when z = –10 and c = –7
   
 
 
 
 
4 b.  
r , when r = –5
–4
   
 
 
 
 
5 a.   q + (–2) + n, when q = –8 and n = 4
   
 
 
 
 
5 b.   a6, when a = –5
   
 
 
 
 
Page 2

Answer Key

1 a.  -2 1/3

 
1 b.  144

 
2 a.  15

 
2 b.  -125

 
3 a.  -6

 
3 b.  1/5

 
4 a.  -9

 
4 b.  1 1/4

 
5 a.  -6

 
5 b.  15625

 


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