The mixed number 80 9/80 written as an improper fraction is 6409/80
To turn the mixed number 80 9/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 80 × 80 = 6400.
After that, add the result to the numerator of the fractional part: 6400 + 9 = 6409.
Next, Write the sum of the previous step on the original denominator: 6409/80.
This means that 80 9/80, as an improper fraction, equals 6409/80.
See also: 80 9/80 as a decimal