The mixed number 258 15/40 written as an improper fraction is 10335/40
To turn the mixed number 258 15/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 258 × 40 = 10320.
After that, add the result to the numerator of the fractional part: 10320 + 15 = 10335.
Next, Write the sum of the previous step on the original denominator: 10335/40.
This means that 258 15/40, as an improper fraction, equals 10335/40.
See also: 258 15/40 as a decimal