Evaluating Expressions

7th Grade•30 minutes

Learning Objective

I can evaluate algebraic expressions with one variable.

When evaluating an expression, you are finding the value of the expression once you work through it.

When you have a number next to a variable, such as 3m, that means they are being multiplied, so 3m means 3 times m.

When evaluating expressions, use the order of operations, also known as PEMDAS, to know what order to perform the operations.

This lesson includes 3 practice questions to reinforce learning.

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1. Evaluate the expression 5m - 9 when m = 4.

2. What is the value of the expression (24 + 6) / m when m = 4?

3. Choose the correct evaluation of the expression 3m² + 2m when m = 4.

Evaluating Expressions with One Variable: A Step-By-Step Guide | Algebraic Expressions

Math with Mr. J