Variable expressions Worksheet

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

1 a.  
g – 1  , when g = –2.5
–2.1
   
 
 
 
 
1 b.   (8 – (–6.2) a)2, when a = 6.5
   
 
 
 
 
2 a.   (–7.2 y – 6.6 k)2, when y = –5.4 and k = 10.2
   
 
 
 
 
2 b.  
y – (–4)  , when y = –1.4
2.9
   
 
 
 
 
3 a.  
–0.3 q  , when q = 9.6 and z = 10.9
z
   
 
 
 
 
3 b.   (2 w – (–2.4))5, when w = –2.4
   
 
 
 
 
4 a.   4.7(–3 x – 1), when x = 0.1
   
 
 
 
 
4 b.  
4 s  , when s = –0.6 and k = 5.6
k
   
 
 
 
 
5 a.  
s – (–7.8)  , when s = 0
–1
   
 
 
 
 
5 b.  
r – 7  , when r = –2.2
–5.8
   
 
 
 
 
Page 2

Answer Key



Answers with decimals have been rounded to 3 decimal digits.
1 a.  1.667

 
1 b.  2332.89

 
2 a.  808.8336

 
2 b.  0.897

 
3 a.  -0.264

 
3 b.  -79.62624

 
4 a.  -6.11

 
4 b.  -0.429

 
5 a.  -17.6

 
5 b.  1.586

 


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