Sign inBook a free assessment

Country and language

Country and language: Kenya

Country and language

10/21 as a decimal and a percentage

10/21

= 0.476190 = 47.619047%

10/21 means 10 out of 21 equal parts. As a decimal it is 0.476190…, and as a percentage 47.619047…%.

10/21 on a fraction bar: 10 of 21 parts shaded

Ways to write it

Decimal
0.476190
The digits under the line repeat forever.
Percentage
47.619047%
Simplest form
Already in its simplest form
As a division
10 ÷ 21
Equivalent fractions
20/42 = 30/63 = 40/84 = 50/105
Compared with one half
Less than 1/2
Reciprocal
21/10
10/21 of 42
20

How to work it out

  1. Divide the top number by the bottom number: 10 ÷ 21 = 0.476190….
  2. To make a percentage, multiply by 100: 0.476190… × 100 = 47.619047…%.
  3. 10 and 21 have no common factor bigger than 1, so 10/21 cannot be simplified.

Quick check

  1. Is 10/21 more or less than 1/2?

    Show the answer

    Less than 1/2

  2. What is 10/21 of 42?

    Show the answer

    20

  3. 10/21 = ?/42

    Show the answer

    20

Practise with a game

Frequently asked questions

What is 10/21 as a decimal?

10/21 as a decimal is 0.476190….

What is 10/21 as a percentage?

10/21 as a percentage is 47.619047…%.

What is 10/21 in its simplest form?

10/21 is already in its simplest form.