Simplest form answer

80/100 Simplified = 4/5

80/100 in simplest form is 4/5, found by dividing 80 and 100 by their greatest common factor, 20. As a decimal 4/5 is 0.8, and as a percent it is 80%.

Simplified

4/5

Decimal

0.8

Percent

80%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 80 and 100 is 20.

2. Divide the numerator and denominator by the GCF.

80 ÷ 20 = 4

100 ÷ 20 = 5

3. Write the result.

80/100 simplified is 4/5.

Decimal and percentage equivalents

Decimal equivalent

4/5 = 0.8

Percentage equivalent

4/5 = 80%

Visual fraction bar

80%

The filled part represents 4/5 of one whole.

Cite this result

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80/100 in simplest form is 4/5, found by dividing 80 and 100 by their greatest common factor, 20.
ILoveFractions, https://www.ilovefractions.com/tools/fraction-simplifier/80-100/, retrieved September 2, 2026

APA

ILoveFractions. (2026). 80/100 Simplified = 4/5. ILoveFractions.com. Retrieved September 2, 2026, from https://www.ilovefractions.com/tools/fraction-simplifier/80-100/

MLA

"80/100 Simplified = 4/5." ILoveFractions.com, https://www.ilovefractions.com/tools/fraction-simplifier/80-100/. Accessed 2 September 2026.

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