What is 9/9 of 8?

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

How to calculate 9/9 of 8?

  1. Multiply the whole number by the numerator of the fraction: 8 × 9 = 72
  2. Divide this result by denominator of the fraction: 72/9 = 8
  3. Simplify by dividing both the numerator and denominator by their GCD (9):
    • 72/9 = 8
    • 9/9 = 1
  4. Which gives: 8/1

How does it work?

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

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

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 9 × 8 = 9 x
  2. Which gives: 72 = 9 x
  3. Divide both sides by 9 to isolate x: 72 9 = 9 x 9
  4. Which gives the result: 72 9 = x (or 8 1 = x )

Thus, 9/9 of 8 is equal to 8/1 (or 8 in its decimal form).