Simplify 3/9

3/9 simplified is 1/3, after dividing the top and bottom by 3.

Result

Answer

\frac{3}{9} = \textcolor{#0b5c56}{\frac{1}{3}}

3/9 simplifies to 1/3.

  • Greatest common factor: 3
  • Decimal: \displaystyle 0.\overline{3} (the 3 repeats forever, about 0.3333)
  • Percent: 33.33%
3/91/3

Same amount, fewer parts

Step-by-step solution

The problem

\frac{3}{9}

  1. Find the greatest common factor. List the factors of each:
    Factors of 3: 1, 3
    Factors of 9: 1, 3, 9
    The greatest common factor (GCF) is 3.

    \text{GCF}(3, 9) = 3

  2. Divide the top and bottom by 3. Dividing both by the same number keeps the value the same.

    = \frac{3 \div 3}{9 \div 3} = \textcolor{#0b5c56}{\frac{1}{3}}

All the working together

\begin{aligned} &\frac{3}{9} \\[8pt] &= \frac{3 \div 3}{9 \div 3} && \textcolor{#5b6660}{\textsf{divide by 3}} \\[8pt] &= \textcolor{#0b5c56}{\frac{1}{3}}\end{aligned}

3/9 in other forms

Simplest form1/3
Greatest common factor3
Decimal0.333… (the 3 repeats forever)
Percent≈ 33.33%
Equal fractions2/6, 4/12, 5/15, 6/18

Fractions over 9 simplified

FractionSimplest formDecimal
1/9already simplest0.111…
2/9already simplest0.222…
3/91/30.333…
4/9already simplest0.444…
5/9already simplest0.555…
6/92/30.666…
7/9already simplest0.777…
8/9already simplest0.888…

Frequently asked questions

What is 3/9 in simplest form?

3/9 simplifies to 1/3. Divide the top and bottom by 3, their greatest common factor: 3 ÷ 3 = 1 and 9 ÷ 3 = 3.

What is the greatest common factor of 3 and 9?

The GCF of 3 and 9 is 3 – the biggest number that divides both with nothing left over.

Is 3/9 equal to 1/3?

Yes. Both are 0.333… (≈ 33.33%). Simplifying changes how the fraction is written, not its value.

More fractions to simplify

Any other fraction or mixed number: use the Simplify Fractions Calculator.