Simplify 10/20

10/20 simplified is 1/2, after dividing the top and bottom by 10.

Result

Answer

\frac{10}{20} = \textcolor{#0b5c56}{\frac{1}{2}}

10/20 simplifies to 1/2.

  • Greatest common factor: 10
  • Decimal: \displaystyle 0.5
  • Percent: 50%
10/201/2

Same amount, fewer parts

Step-by-step solution

The problem

\frac{10}{20}

  1. Find the greatest common factor. List the factors of each:
    Factors of 10: 1, 2, 5, 10
    Factors of 20: 1, 2, 4, 5, 10, 20
    The greatest common factor (GCF) is 10.

    \text{GCF}(10, 20) = 10

  2. Divide the top and bottom by 10. Dividing both by the same number keeps the value the same.

    = \frac{10 \div 10}{20 \div 10} = \textcolor{#0b5c56}{\frac{1}{2}}

All the working together

\begin{aligned} &\frac{10}{20} \\[8pt] &= \frac{10 \div 10}{20 \div 10} && \textcolor{#5b6660}{\textsf{divide by 10}} \\[8pt] &= \textcolor{#0b5c56}{\frac{1}{2}}\end{aligned}

10/20 in other forms

Simplest form1/2
Greatest common factor10
Decimal0.5
Percent50%
Equal fractions2/4, 3/6, 4/8, 5/10

Fractions over 20 simplified

FractionSimplest formDecimal
1/20already simplest0.05
2/201/100.1
3/20already simplest0.15
4/201/50.2
5/201/40.25
6/203/100.3
7/20already simplest0.35
8/202/50.4
9/20already simplest0.45
10/201/20.5
11/20already simplest0.55
12/203/50.6
13/20already simplest0.65
14/207/100.7
15/203/40.75
16/204/50.8
17/20already simplest0.85
18/209/100.9
19/20already simplest0.95

Frequently asked questions

What is 10/20 in simplest form?

10/20 simplifies to 1/2. Divide the top and bottom by 10, their greatest common factor: 10 ÷ 10 = 1 and 20 ÷ 10 = 2.

What is the greatest common factor of 10 and 20?

The GCF of 10 and 20 is 10 – the biggest number that divides both with nothing left over.

Is 10/20 equal to 1/2?

Yes. Both are 0.5 (50%). 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.