The mixed number 1 11/80 written as an improper fraction is 91/80
To turn the mixed number 1 11/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 1 × 80 = 80.
After that, add the result to the numerator of the fractional part: 80 + 11 = 91.
Next, Write the sum of the previous step on the original denominator: 91/80.
This means that 1 11/80, as an improper fraction, equals 91/80.
See also: 1 11/80 as a decimal