The mixed number 3 21/20 written as an improper fraction is 81/20
To turn the mixed number 3 21/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 3 × 20 = 60.
After that, add the result to the numerator of the fractional part: 60 + 21 = 81.
Next, Write the sum of the previous step on the original denominator: 81/20.
This means that 3 21/20, as an improper fraction, equals 81/20.
See also: 3 21/20 as a decimal