Variable expressions Worksheet

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

1 a.  
r – 5  , when r = 4
–1
   
 
 
 
 
1 b.   8(–4.8 y – (–4)), when y = –5.9
   
 
 
 
 
2 a.   (–7.8 + 8.9 p)3, when p = 0
   
 
 
 
 
2 b.  
q – (–6)  , when q = –4.5
3.7
   
 
 
 
 
3 a.   1.9 q – (–3) r + 1, when q = 3.2 and r = 6.1
   
 
 
 
 
3 b.  
8.5 pd  , when p = 3.6 and d = 6.1
–5
   
 
 
 
 
4 a.  
5.6 p + z  , when p = 0
1
   
 
 
 
 
4 b.  
a – (–4)  , when a = 10.9
4
   
 
 
 
 
5 a.   (–4 v – (–8))2, when v = –2
   
 
 
 
 
5 b.  
y – 1  , when y = –1.9
7.4
   
 
 
 
 
Page 2

Answer Key



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

 
1 b.  258.56

 
2 a.  -474.552

 
2 b.  0.405

 
3 a.  25.38

 
3 b.  -4.9

 
4 a.  7.3

 
4 b.  3.725

 
5 a.  256

 
5 b.  -0.392

 


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