40/100 as a decimal and a percentage
40/100
= 0.4 = 40%
40/100 means 40 out of 100 equal parts. As a decimal it is 0.4, and as a percentage 40%.
Ways to write it
- Decimal
- 0.4
- Percentage
- 40%
- Simplest form
- 2/5
- As a division
- 40 ÷ 100
- Equivalent fractions
- 4/10 = 6/15 = 8/20 = 10/25
- Compared with one half
- Less than 1/2
- Reciprocal
- 100/40
- 40/100 of 200
- 80
How to work it out
- Divide the top number by the bottom number: 40 ÷ 100 = 0.4.
- To make a percentage, multiply by 100: 0.4 × 100 = 40%.
- To simplify, divide the top and bottom by 20, their highest common factor: 40 ÷ 20 = 2 and 100 ÷ 20 = 5, so 40/100 = 2/5.
Quick check
Is 40/100 more or less than 1/2?
Show the answer
Less than 1/2
What is 40/100 of 200?
Show the answer
80
40/100 = ?/200
Show the answer
80
Practice with a game
Frequently asked questions
What is 40/100 as a decimal?
40/100 as a decimal is 0.4.
What is 40/100 as a percentage?
40/100 as a percentage is 40%.
What is 40/100 in its simplest form?
40/100 in its simplest form is 2/5.