What is 8/9 of 83?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 8/9 of 83? We'll show you a straightforward method to achieve that.

How to calculate 8/9 of 83?

  1. Multiply the whole number by the numerator of the fraction: 83 × 8 = 664
  2. Divide this result by denominator of the fraction: 664/9 = 73.777777777778

Since 664/9 is an improper fraction, the result could also be expressed as a mixed number: 73 7/9

How does it work?

The principle behind finding a fraction of a number, such as 8/9 of 83, is rooted in the method of cross-multiplication.

Consider the following proportion: 8 9 = x 83 (where x represents 8/9 of 83)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 8 × 83 = 9 x
  2. Which gives: 664 = 9 x
  3. Divide both sides by 9 to isolate x: 664 9 = 9 x 9
  4. Which gives the result: 664 9 = x

Thus, 8/9 of 83 is equal to 664/9 (or 73.777777777778 in its decimal form).