Variable expressions Worksheet

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

1 a.  
x – 2  , when x = 4
4
   
 
 
 
 
1 b.   (8 a – (–7))2, when a = –4
   
 
 
 
 
2 a.  
3 c + 5  , when c = –2
7
   
 
 
 
 
2 b.  
a – (–8)  , when a = –10
6
   
 
 
 
 
3 a.  
r – 3  , when r = –8
10
   
 
 
 
 
3 b.  
x – 4  , when x = 4
2
   
 
 
 
 
4 a.   (6 a – 8)3, when a = 2
   
 
 
 
 
4 b.  
q – 3  , when q = –2
4
   
 
 
 
 
5 a.   (–6 + 9 t)2, when t = 8
   
 
 
 
 
5 b.  
t – (–2)  , when t = –1
7
   
 
 
 
 
Page 2

Answer Key

1 a.  1/2

 
1 b.  625

 
2 a.  -1/7

 
2 b.  -1/3

 
3 a.  -1 1/10

 
3 b.  0

 
4 a.  64

 
4 b.  -1 1/4

 
5 a.  4356

 
5 b.  1/7

 


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