The mixed number 20 70/80 written as an improper fraction is 1670/80
To turn the mixed number 20 70/80 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 20 × 80 = 1600.
After that, add the result to the numerator of the fractional part: 1600 + 70 = 1670.
Next, Write the sum of the previous step on the original denominator: 1670/80.
This means that 20 70/80, as an improper fraction, equals 1670/80.
See also: 20 70/80 as a decimal