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Country and language: Canada

Country and language

40/90 as a decimal and a percentage

40/90

= 0.4 = 44.4%

40/90 means 40 out of 90 equal parts. As a decimal it is 0.44…, and as a percentage 44.44…%.

40/90 on a fraction bar: 40 of 90 parts shaded

Ways to write it

Decimal
0.4
The digits under the line repeat forever.
Percentage
44.4%
Simplest form
4/9
As a division
40 ÷ 90
Equivalent fractions
8/18 = 12/27 = 16/36 = 20/45
Compared with one half
Less than 1/2
Reciprocal
90/40
40/90 of 180
80

How to work it out

  1. Divide the top number by the bottom number: 40 ÷ 90 = 0.44….
  2. To make a percentage, multiply by 100: 0.44… × 100 = 44.44…%.
  3. To simplify, divide the top and bottom by 10, their highest common factor: 40 ÷ 10 = 4 and 90 ÷ 10 = 9, so 40/90 = 4/9.

Quick check

  1. Is 40/90 more or less than 1/2?

    Show the answer

    Less than 1/2

  2. What is 40/90 of 180?

    Show the answer

    80

  3. 40/90 = ?/180

    Show the answer

    80

Practise with a game

Frequently asked questions

What is 40/90 as a decimal?

40/90 as a decimal is 0.44….

What is 40/90 as a percentage?

40/90 as a percentage is 44.44…%.

What is 40/90 in its simplest form?

40/90 in its simplest form is 4/9.