- Topics At a Glance
- Expressions
- Addition
- Subtraction
- Multiplication
- Division
- Parentheses
- Variables
- Translating Slowly
- Equations and Inequalities
- The Equals Sign
- Inequalities
**Word Problems**- How to Read Word Problems
- How to Become a Word Problem Expert
- Geometry Problems
- Averages
- Percents
**The Word "Per"**- Coin Problems
- Written Inequalities
- In the Real World
- I Like Abstract Stuff; Why Should I Care?
- How to Solve a Math Problem

The word "per'' is a signal that it's time to do division. It means roughly "for every." Think to yourself, "For every numerator there is a denominator." We're sorry we don't have this for you in acronym form, unless FENTIAD helps you somehow.

Luisa drove 150 miles and used 6 gallons of gas. How many miles per gallon does her car get? Also, when will she start caring about the environment and go electric?

To find the number of miles *per* gallon, we take the number of miles divided by the number of gallons:

so Luisa's car gets 25 miles per gallon. Oh, good. She can keep driving away from the Earth's problems.