4.1.d – Summary: Writing Percents Using Words, Ratios, and Fractions

Key Concepts

  • Convert a percent to a fraction.
    1. Write the percent as a ratio with the denominator [latex]100[/latex].
    2. Simplify the fraction if possible.
  • Convert a percent to a decimal.
    1. Write the percent as a ratio with the denominator [latex]100[/latex].
    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 [latex]100[/latex], rewrite it as an equivalent fraction with denominator [latex]100[/latex].
    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 [latex]100[/latex] .