The mixed number 31 11/40 written as an improper fraction is 1251/40
To turn the mixed number 31 11/40 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 31 × 40 = 1240.
After that, add the result to the numerator of the fractional part: 1240 + 11 = 1251.
Next, Write the sum of the previous step on the original denominator: 1251/40.
This means that 31 11/40, as an improper fraction, equals 1251/40.
See also: 31 11/40 as a decimal