Free worksheets for evaluating expressions with variables
With this worksheet generator, you can make printable worksheets for evaluating simple variable expressions, when the value of the variable(s) is given. There are three levels, the first level only including one operation. For example, the student might find the value of the expression 2(t − 5), when t has the value 6.
These worksheets suit best grades 6, 7, and 8, including prealgebra and algebra 1 courses.
To customize the worksheets, you can control the number of problems, difficulty level, range of numbers used (you can include negative numbers and decimals), workspace below the problems, border around the problems, and additional instructions.
Basic instructions for the worksheets
Each worksheet is randomly generated and thus unique. The answer key is automatically generated and is placed on the second page of the file.
You can use the generator to make worksheets either in html or PDF format — both are easy to print. The html worksheet has the advantage that you can save it directly from your browser (choose File → Save) and then later edit it in Word or other word processing program.
Here are some quick links for ready worksheets. Refresh the worksheet page to get another of the same kind, until you are happy with the problems & layout.
Readymade worksheets
 Level 1: usually one operation, no negative numbers in the expressions
 Level 1: usually one operation, variable may be negative/positive integer
 Level 1: usually one operation, variables and the constant may be negative/positive integers
 Levels 1 & 2: variables have positive integer values
 Levels 1 & 2: variables and constants are negative or positive integers
 Levels 1 & 2: variables and constant are positive and may have one decimal digit
 Levels 2 & 3: variables and constants are positive integers
 Levels 2 & 3: some variables and constant may be negative integers
 Levels 2 & 3: variables and constant may be negative and may have one decimal digit
Expressions with Variables Worksheet Generator 
By including negative numbers in the ranges or including decimal digits, you can make the problems more difficult.
Range for the value of variable 1: Min Max: Range for the value of variable 2: Min Max: Range for constant 1: Min Max: Range for constants 2 and 3: Min Max: Number of decimal digits used in the variable(s) and constant(s) 
Number of empty lines below the problems (workspace)
Page orientation: Portrait Landscape (PDF worksheet only; the orientation of an html worksheet can be set in the print preview of the browser) Font:
Font Size:

Additional title & instructions (HTML allowed) 
Key to Algebra Workbooks
Key to Algebra offers a unique, proven way to introduce algebra to your students. New concepts are explained in simple language, and examples are easy to follow. Word problems relate algebra to familiar situations, helping students to understand abstract concepts. Students develop understanding by solving equations and inequalities intuitively before formal solutions are introduced. Students begin their study of algebra in Books 14 using only integers. Books 57 introduce rational numbers and expressions. Books 810 extend coverage to the real number system.