What is 21 8/20 as an improper fraction?

The mixed number 21 8/20 written as an improper fraction is 428/20

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Convert 21 8/20 as an improper fraction

To turn the mixed number 21 8/20 into an improper fraction, use these simple steps:

First, multiply the whole number by the denominator of the fractional part: 21 × 20 = 420.

After that, add the result to the numerator of the fractional part: 420 + 8 = 428.

Next, Write the sum of the previous step on the original denominator: 428/20.

21
8/20
=
21 × 20 + 8/20
=
428/20

This means that 21 8/20, as an improper fraction, equals 428/20.

See also: 21 8/20 as a decimal

Examples of decimal to fraction calculations