What is 9/9 of 55?

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 55? We'll show you a straightforward method to achieve that.

How to calculate 9/9 of 55?

  1. Multiply the whole number by the numerator of the fraction: 55 × 9 = 495
  2. Divide this result by denominator of the fraction: 495/9 = 55
  3. Simplify by dividing both the numerator and denominator by their GCD (9):
    • 495/9 = 55
    • 9/9 = 1
  4. Which gives: 55/1

How does it work?

The principle behind finding a fraction of a number, such as 9/9 of 55, is rooted in the method of cross-multiplication.

Consider the following proportion: 9 9 = x 55 (where x represents 9/9 of 55)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 9 × 55 = 9 x
  2. Which gives: 495 = 9 x
  3. Divide both sides by 9 to isolate x: 495 9 = 9 x 9
  4. Which gives the result: 495 9 = x (or 55 1 = x )

Thus, 9/9 of 55 is equal to 55/1 (or 55 in its decimal form).