Dividing fractions, step by step

Dividing fractions feels strange until you learn the trick that turns it into multiplication.

The question

÷

each piece is

÷ =
× =
  1. 4/5 ÷ 3/8 is asking a question: how many 3/8s fit inside 4/5?
  2. Lay 3/8 against it and see how many times it goes.
  3. 2 whole pieces and 2/15 of another fits — so 4/5 ÷ 3/8 = 32/15.
  4. Now try multiplying by 8/3 — 3/8 turned over. It lands on the same number.
  5. That is all turning it over does — the two questions are the same question, so either way of writing it will do. 4/5 ÷ 3/8 = 32/15.

How it works.

  1. 01

    4/5 ÷ 3/8 is asking a question: how many 3/8s fit inside 4/5?

  2. 02

    Lay 3/8 against it and see how many times it goes.

  3. 03

    2 whole pieces and 2/15 of another fits — so 4/5 ÷ 3/8 = 32/15.

  4. 04

    Now try multiplying by 8/3 — 3/8 turned over. It lands on the same number.

  5. 05

    That is all turning it over does — the two questions are the same question, so either way of writing it will do. 4/5 ÷ 3/8 = 32/15.