0.15 as a fraction
0.15 is 15 hundredths, so write it as 15/100 and simplify to 3/20.
The answer
0.15 = 3/20
How to write 0.15 as a fraction
Put the digits in a place value chart. The last digit tells you the bottom of the fraction.
| Ones | Tenths | Hundredths |
|---|---|---|
| 0 | 1 | 5 |
The last digit is in the hundredths column, so 0.15 is 15 hundredths: 15/100.
Simplify by dividing the top and bottom by the same number. In one go, divide by the highest common factor, 5: 15/100 = 3/20.
3 and 20 share no factor except 1, so 3/20 is the simplest form.
As a percentage, 0.15 = 15%: multiply by 100, which moves each digit two places to the left.
To check, divide back: see 3/20 as a decimal and 3/20 as a percentage.
See 3/20
More decimals as fractions
Questions parents ask
What is 0.15 as a fraction in its simplest form?
0.15 = 15/100 = 3/20. Divide the top and bottom of 15/100 by 5 to get 3/20.
How do you write 0.15 as a fraction?
The last digit of 0.15 is in the hundredths column, so write the digits over 100: 15/100. Then simplify if you can.
What is 0.15 as a percentage?
0.15 = 15%. Multiply by 100: the digits move two places to the left.
Fractions, decimals and percentages run all through 11+ maths
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