Simplify 4/20

4/20 simplified is 1/5, after dividing the top and bottom by 4.

Result

Answer

\frac{4}{20} = \textcolor{#0b5c56}{\frac{1}{5}}

4/20 simplifies to 1/5.

  • Greatest common factor: 4
  • Decimal: \displaystyle 0.2
  • Percent: 20%
4/201/5

Same amount, fewer parts

Step-by-step solution

The problem

\frac{4}{20}

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

    \text{GCF}(4, 20) = 4

  2. Divide the top and bottom by 4. Dividing both by the same number keeps the value the same.

    = \frac{4 \div 4}{20 \div 4} = \textcolor{#0b5c56}{\frac{1}{5}}

All the working together

\begin{aligned} &\frac{4}{20} \\[8pt] &= \frac{4 \div 4}{20 \div 4} && \textcolor{#5b6660}{\textsf{divide by 4}} \\[8pt] &= \textcolor{#0b5c56}{\frac{1}{5}}\end{aligned}

4/20 in other forms

Simplest form1/5
Greatest common factor4
Decimal0.2
Percent20%
Equal fractions2/10, 3/15, 5/25, 6/30

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 4/20 in simplest form?

4/20 simplifies to 1/5. Divide the top and bottom by 4, their greatest common factor: 4 ÷ 4 = 1 and 20 ÷ 4 = 5.

What is the greatest common factor of 4 and 20?

The GCF of 4 and 20 is 4 – the biggest number that divides both with nothing left over.

Is 4/20 equal to 1/5?

Yes. Both are 0.2 (20%). 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.