The mixed number 21 87/100 written as an improper fraction is 2187/100
To turn the mixed number 21 87/100 into an improper fraction, use these simple steps:
First, multiply the whole number by the denominator of the fractional part: 21 × 100 = 2100.
After that, add the result to the numerator of the fractional part: 2100 + 87 = 2187.
Next, Write the sum of the previous step on the original denominator: 2187/100.
This means that 21 87/100, as an improper fraction, equals 2187/100.
See also: 21 87/100 as a decimal