What is 21 1/4 as an improper fraction?

The mixed number 21 1/4 written as an improper fraction is 85/4

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Convert 21 1/4 as an improper fraction

To turn the mixed number 21 1/4 into an improper fraction, use these simple steps:

First, multiply the whole number by the denominator of the fractional part: 21 × 4 = 84.

After that, add the result to the numerator of the fractional part: 84 + 1 = 85.

Next, Write the sum of the previous step on the original denominator: 85/4.

21
1/4
=
21 × 4 + 1/4
=
85/4

This means that 21 1/4, as an improper fraction, equals 85/4.

See also: 21 1/4 as a decimal

Examples of decimal to fraction calculations