7/21 as a decimal and a percentage
7/21
= 0.3 = 33.3%
7/21 means 7 out of 21 equal parts. As a decimal it is 0.33…, and as a percentage 33.33…%.
Ways to write it
- Decimal
- 0.3
The digits under the line repeat forever. - Percentage
- 33.3%
- Simplest form
- 1/3
- As a division
- 7 ÷ 21
- Equivalent fractions
- 2/6 = 3/9 = 4/12 = 5/15
- Compared with one half
- Less than 1/2
- Reciprocal
- 21/7
- 7/21 of 63
- 21
How to work it out
- Divide the top number by the bottom number: 7 ÷ 21 = 0.33….
- To make a percentage, multiply by 100: 0.33… × 100 = 33.33…%.
- To simplify, divide the top and bottom by 7, their highest common factor: 7 ÷ 7 = 1 and 21 ÷ 7 = 3, so 7/21 = 1/3.
Quick check
Is 7/21 more or less than 1/2?
Show the answer
Less than 1/2
What is 7/21 of 63?
Show the answer
21
7/21 = ?/42
Show the answer
14
Practise with a game
Frequently asked questions
What is 7/21 as a decimal?
7/21 as a decimal is 0.33….
What is 7/21 as a percentage?
7/21 as a percentage is 33.33…%.
What is 7/21 in its simplest form?
7/21 in its simplest form is 1/3.