The mixed number 128 1/4 written as an improper fraction is 513/4
To turn the mixed number 128 1/4 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 128 × 4 = 512.
After that, add the result to the numerator of the fractional part: 512 + 1 = 513.
Next, Write the sum of the previous step on the original denominator: 513/4.
This means that 128 1/4, as an improper fraction, equals 513/4.
See also: 128 1/4 as a decimal