Convert 0.(5) to a Fraction

Quickly express 0.(5) as a fraction and see detailed conversion steps and simplification rules.

Result

0.(5) =
5
9
0.(5)
=
5
9
(convert repeating part to fraction)
5/9
→ simplify ÷1
5
9
(already in simplest terms, gcd=1)

Step 1: Interpret the repeating part and express 0.(5) as a fraction 5/9.

Step 2: Already in simplest form (gcd=1): 5/9.

Property: Repeating decimals occur when the simplest denominator has prime factors other than 2 and 5.

FAQ

Why can 0.(5) be converted to a fraction?
Decimals can be expressed as fractions by using place value and simplifying.
0.(5) terminating or repeating?
It is repeating.
Can it be simplified further?
5/9 is simplest.

Related Conversions

Extended Reading: What 0.(5) Means in Real Life

Percentage & Ratio: 0.(5) can be interpreted as a repeating proportion in practical scenarios like discounts and rates.

Statistics: A proportion of 0.(5) often represents a 0% probability — for example, a 0% significance level (p-value) in experiments or surveys.

Finance: Rates expressed with 0.(5) (e.g., 0%) appear in returns and fees.

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