Writing Expressions Involving Money Amounts

Students will learn to write expressions using money amounts.

Teaching Objectives:

  • Students will review evaluating expressions.
  • Students will review expressions verses equations.
  • Students will learn to write expressions to evaluate money amounts.

Suggested Grade Level

6th – 9th Grade

Lesson Excerpt:

What is an expression?

An expression is a numerical statement that has variables, numbers and operations in it.  An expression is not an equation. An equation is looking to be solved. There is only one solution to an equation. An expression is evaluated. Depending on given values, there may be more than solution to an expression.

Here is an example of an expression.



Five times some unknown number plus six.

We don’t know what the unknown number, or variable x is, so we aren’t sure what the value of the expression is. Notice that we don’t have an equals sign. This expression isn’t an equation. It is an expression.  Because we haven’t been given a value for the variable, this is as far as we can go with this expression.

We can write expressions.

Using what we know about expression, we can write an expression to describe a particular situation.  Let’s look at an example.

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