What is 21 5/80 as an improper fraction?

The mixed number 21 5/80 written as an improper fraction is 1685/80

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Convert 21 5/80 as an improper fraction

To turn the mixed number 21 5/80 into an improper fraction, use these simple steps:

First, multiply the whole number by the denominator of the fractional part: 21 × 80 = 1680.

After that, add the result to the numerator of the fractional part: 1680 + 5 = 1685.

Next, Write the sum of the previous step on the original denominator: 1685/80.

21
5/80
=
21 × 80 + 5/80
=
1685/80

This means that 21 5/80, as an improper fraction, equals 1685/80.

See also: 21 5/80 as a decimal

Examples of decimal to fraction calculations