Variable expressions Worksheet

Evaluate the expressions for the given values of the variable(s).

1 a.   1.8 v – (–1.5) k + 3, when v = 8.3 and k = 8.9
   
 
 
 
 
1 b.   (–1 b – (–2))3, when b = 9.7
   
 
 
 
 
2 a.  
t – (–3.8)  , when t = 0.5
3.4
   
 
 
 
 
2 b.  
s – 2  , when s = –9.2
5
   
 
 
 
 
3 a.  
–2.5 x + k  , when x = –5.1
–5
   
 
 
 
 
3 b.  
q – 1.3  , when q = 9.3
–4.8
   
 
 
 
 
4 a.   (4.3 + 4.5 x)2, when x = –6.4
   
 
 
 
 
4 b.  
q – (–1.5)  , when q = 2.7
5.6
   
 
 
 
 
5 a.   –2.1(–8 n + (–3)), when n = –3
   
 
 
 
 
5 b.  
c – (–4.5)  , when c = –6.2
–1.3
   
 
 
 
 
Page 2

Answer Key



Answers with decimals have been rounded to 3 decimal digits.
1 a.  31.29

 
1 b.  -456.533

 
2 a.  1.265

 
2 b.  -2.24

 
3 a.  -2.85

 
3 b.  -1.667

 
4 a.  600.25

 
4 b.  0.75

 
5 a.  -44.1

 
5 b.  1.308

 


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