Fractions as percentages

p/q = ?%

The trick, step by step

1. Know the unit fraction: 1/8 = 100% ÷ 8 = 12.5%.

   1/812.5%

2. Multiply by the top number: 3 × 12.5% = 37.5%.

   3 × 12.5%37.5%

given working answer taken away

Why it works

A fraction p/q of the whole is p/q of 100%, which is p × (100% ÷ q). Learn the unit fractions (1/2, 1/4, 1/5, 1/8, 1/10, 1/20, 1/25) and multiply.