Variable expressions Worksheet

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

1 a.   –3.2 v – 7 a – 8, when v = 7.9 and a = 5.2
   
 
 
 
 
1 b.  
r – 3  , when r = –4.2
8
   
 
 
 
 
2 a.   (–2.1 z + 4)2, when z = –4
   
 
 
 
 
2 b.  
7  , when g = 4.1
4.3 – g
   
 
 
 
 
3 a.  
–7.7 – (–3.5) s  , when s = 9.9
–5
   
 
 
 
 
3 b.  
d – 3  , when d = 7.9
8
   
 
 
 
 
4 a.   7.2(7 + 3.5 g), when g = 6.7
   
 
 
 
 
4 b.  
a – (–2)  , when a = –2.6
–7.6
   
 
 
 
 
5 a.  
2.6 c  , when c = –8.9 and b = 3.4
b2
   
 
 
 
 
5 b.  
–6.6 b  , when b = 6.3 and s = 6
s
   
 
 
 
 
Page 2

Answer Key



Answers with decimals have been rounded to 3 decimal digits.
1 a.  -69.68

 
1 b.  -0.9

 
2 a.  153.76

 
2 b.  35

 
3 a.  -5.39

 
3 b.  0.613

 
4 a.  219.24

 
4 b.  0.079

 
5 a.  -2.002

 
5 b.  -6.93

 


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