Evaluating Variable Expressions Worksheet

                    Lesson 1

Problem:                   Evaluate the following for r = 5, s = 4

(6s + 2) - (5r - 5)

Solution                    Putting the value of r = 5, s = 4 in the above expression

Step 1: 

                                                            Solution                    (6s+2)-(5r-5) = (6x4+2)-(5x5-5) = 26 - 20

Step 2:      

Solution                    Subtract 26 and 20, i.e. 26 - 20 = 6

Step 3:     

Solution                    The answer is:  6

Step 4:

Complete                                                    

                                                            Try two practice problems:  

                                                                                               Evaluate the following for r=2, s=4, t=2

A. (4s+2)-(2r-5)

B. – (4s-r-s-4t)-(3s—r)

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