The mixed number 80 45/8 written as an improper fraction is 685/8
To turn the mixed number 80 45/8 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 80 × 8 = 640.
After that, add the result to the numerator of the fractional part: 640 + 45 = 685.
Next, Write the sum of the previous step on the original denominator: 685/8.
This means that 80 45/8, as an improper fraction, equals 685/8.
See also: 80 45/8 as a decimal