The mixed number 99 21/8 written as an improper fraction is 813/8
To turn the mixed number 99 21/8 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 99 × 8 = 792.
After that, add the result to the numerator of the fractional part: 792 + 21 = 813.
Next, Write the sum of the previous step on the original denominator: 813/8.
This means that 99 21/8, as an improper fraction, equals 813/8.
See also: 99 21/8 as a decimal