Variable expressions Worksheet

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

1 a.  
y – (–3)  , when y = 6.9
4.1
   
 
 
 
 
1 b.  
u – 7.9  , when u = –5.4
–2
   
 
 
 
 
2 a.  
–3 a  , when a = –8.9
–8
   
 
 
 
 
2 b.  
s – 4.4  , when s = 4.1
3.7
   
 
 
 
 
3 a.   (–1.8 – (–3) r)2, when r = –9.9
   
 
 
 
 
3 b.  
b – 8  , when b = –8.4
–5
   
 
 
 
 
4 a.  
s – (–5)  , when s = 4.8
–7.5
   
 
 
 
 
4 b.  
s – (–5)  , when s = 6.8
–8
   
 
 
 
 
5 a.  
v – 8  , when v = 8.5
–2.2
   
 
 
 
 
5 b.  
u – 6.4  , when u = 0.1
–7.1
   
 
 
 
 
Page 2

Answer Key



Answers with decimals have been rounded to 3 decimal digits.
1 a.  2.415

 
1 b.  6.65

 
2 a.  -3.338

 
2 b.  -0.081

 
3 a.  992.25

 
3 b.  3.28

 
4 a.  -1.307

 
4 b.  -1.475

 
5 a.  -0.227

 
5 b.  0.887

 


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