1
18
0.0(5)
1/18 as a decimal is 0.0(5)
Repeating
1/18 is 0.0(5), or 5.(5)%. It repeats with a period of 1 digits.
The digits in brackets repeat for ever. 0.1(6) is 0.16666… and 0.(3) is 0.3333…
Seen as a length
The whole is cut into as many parts as the denominator, and as many are filled as the numerator. The tick marks the halfway point.
- Decimal
- 0.0(5)
- Percent
- 5.(5)%
- Ratio
- 1 : 17
- Repeating part
- 5 (1)
- Degrees of a circle
- 20°
- Minutes of an hour
- 3.(3)
- Reciprocal
- 18/1 = 18
- Equivalent fractions
- 2/36, 3/54, 4/72, 5/90
Same denominator
Nearby values
How to read this
- The digits in brackets repeat for ever — 0.1(6) means 0.16666…
- If the denominator has no prime factors besides 2 and 5, the decimal stops.
- Equal fractions do not get separate pages: looking up 2/4 brings you to 1/2.
- A percentage is the same number times 100; degrees are the same number times 360.
Frequently asked questions
Q. What is 1/18 as a decimal?
0.0(5). The 1 digits in brackets repeat for ever.
Q. What is 1/18 as a percentage?
5.(5)%.
Q. Which fractions equal 1/18?
2/36, 3/54, 4/72, 5/90 … multiplying top and bottom by the same number leaves the value unchanged.
Q. What is the reciprocal of 1/18?
18/1, or 18 as a mixed number.