Simplest form answer

4/20 Simplified = 1/5

4/20 in simplest form is 1/5, found by dividing 4 and 20 by their greatest common factor, 4. As a decimal 1/5 is 0.2, and as a percent it is 20%.

Simplified

1/5

Decimal

0.2

Percent

20%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 4 and 20 is 4.

2. Divide the numerator and denominator by the GCF.

4 ÷ 4 = 1

20 ÷ 4 = 5

3. Write the result.

4/20 simplified is 1/5.

Decimal and percentage equivalents

Decimal equivalent

1/5 = 0.2

Percentage equivalent

1/5 = 20%

Visual fraction bar

20%

The filled part represents 1/5 of one whole.

Cite this result

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4/20 in simplest form is 1/5, found by dividing 4 and 20 by their greatest common factor, 4.
ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/4-20/, retrieved September 2, 2026

APA

ILoveFractions. (2026). 4/20 Simplified = 1/5. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/4-20/

MLA

"4/20 Simplified = 1/5." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/4-20/. Accessed 2 September 2026.

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