**In this module you can study how to substitute numbers into algebraic expressions.**

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An expression is not an equation.

You cannot solve an expression; you can only simplify it or evaluate it.

Some people try adding "= 0 " to the end of an expression when they want to "solve" it, but you cannot solve an expression.

**Study and practice**

- Study evaluating expressions with substitutionThis page from mathsisfun.com shows you how to use the substitution method to evaluate expressions. At the end you can take a quiz to test your understanding.
- Download a worksheet of evaluating expression with up to 2 variablesThis worksheet from Kuta software provides you with 24 two-variable expressions to evaluate.
- Download a worksheet of variable and verbal expressionsThis worksheet from Kuta software asks you to translate algebraic expressions into words and words into algebraic expressions. In the third section, you are asked to evaluate ten verbal expressions.
- Download a worksheet of evaluating expressions with three variablesThis worksheet from Kuta software lets you practice evaluating expressions with up to three variables.
- Quiz yourself on evaluating expressionsTry this six-question quiz from onlinemathlearning.com.