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Country and language: Canada

Country and language

9/18 as a decimal and a percentage

9/18

= 0.5 = 50%

9/18 means 9 out of 18 equal parts. As a decimal it is 0.5, and as a percentage 50%.

9/18 on a fraction bar: 9 of 18 parts shaded

Ways to write it

Decimal
0.5
Percentage
50%
Simplest form
1/2
As a division
9 ÷ 18
Equivalent fractions
2/4 = 3/6 = 4/8 = 5/10
Compared with one half
Equal to 1/2
Reciprocal
18/9
9/18 of 72
36

How to work it out

  1. Divide the top number by the bottom number: 9 ÷ 18 = 0.5.
  2. To make a percentage, multiply by 100: 0.5 × 100 = 50%.
  3. To simplify, divide the top and bottom by 9, their highest common factor: 9 ÷ 9 = 1 and 18 ÷ 9 = 2, so 9/18 = 1/2.

Quick check

  1. Is 9/18 more or less than 1/2?

    Show the answer

    Equal to 1/2

  2. What is 9/18 of 72?

    Show the answer

    36

  3. 9/18 = ?/36

    Show the answer

    18

Practise with a game

Frequently asked questions

What is 9/18 as a decimal?

9/18 as a decimal is 0.5.

What is 9/18 as a percentage?

9/18 as a percentage is 50%.

What is 9/18 in its simplest form?

9/18 in its simplest form is 1/2.