• ### To Do Lessons

Mathematics » Introducing Percents » Understand Percent

# Key Concepts

This is a lesson from the tutorial, Introducing Percents and we encourage you to log in or register before you continue, so that you can track your progress.

## Key Concepts

• Convert a percent to a fraction.
1. Write the percent as a ratio with the denominator 100.
2. Simplify the fraction if possible.
• Convert a percent to a decimal.
1. Write the percent as a ratio with the denominator 100.
2. Convert the fraction to a decimal by dividing the numerator by the denominator.
• Convert a decimal to a percent.
1. Write the decimal as a fraction.
2. If the denominator of the fraction is not 100, rewrite it as an equivalent fraction with denominator 100.
3. Write this ratio as a percent.
• Convert a fraction to a percent.
1. Convert the fraction to a decimal.
2. Convert the decimal to a percent.

## Glossary

### percent

A percent is a ratio whose denominator is $$100$$.