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Percentages — Basics

JHS

Number

Concept

Find a percentage of a number and express ratios as percentages.

Walkthrough

Find 25% of 80.

  1. 1.To find a percentage of a number, convert the percentage to a decimal and multiply.
  2. 2.Convert 25% to a decimal: 25% = 25⁄100 = 0.25.
  3. 3.Multiply the decimal by the number: 0.25 × 80 = 20.
  4. 4.So 25% of 80 is 20.
  5. 5.Verify: 25% is the same as 1⁄4, and 1⁄4 of 80 = 20.

Answer

20

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