The mixed number 54 99/10 written as an improper fraction is 639/10
To turn the mixed number 54 99/10 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 54 × 10 = 540.
After that, add the result to the numerator of the fractional part: 540 + 99 = 639.
Next, Write the sum of the previous step on the original denominator: 639/10.
This means that 54 99/10, as an improper fraction, equals 639/10.
See also: 54 99/10 as a decimal