GCSE Maths, Unit 3, Lesson 3 of 5
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Fractions, decimals and percentages

GCSE Maths, Fractions, decimals and percentages, 25 minutes

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Move between fractions, decimals and percentages, order mixed lists, and turn recurring decimals into fractions.

Three ways to write the same number

  • Fraction to decimal: divide the top by the bottom, or make the bottom 10, 100 or 1000. 3/8 = 375/1000 = 0.375.
  • Decimal to fraction: 0.375 is 375 thousandths, 375/1000 = 3/8.
  • Percentage means out of 100: 35% = 35/100 = 7/20 = 0.35.

To order a mixed list, write everything as a decimal first.

The rest of this lesson and its 7 practice questions are in Plus.

Screen 1 of 4, free to read.

  • 7 exam-style questions, marked as you go, each with a worked solution
  • The Fraction Calculator beside every question
  • Anything you get wrong is saved to your flashcards