The mixed number 257 8/20 written as an improper fraction is 5148/20
To turn the mixed number 257 8/20 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 257 × 20 = 5140.
After that, add the result to the numerator of the fractional part: 5140 + 8 = 5148.
Next, Write the sum of the previous step on the original denominator: 5148/20.
This means that 257 8/20, as an improper fraction, equals 5148/20.
See also: 257 8/20 as a decimal