What is 2/9 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 2/9 of 55? We'll show you a straightforward method to achieve that.

How to calculate 2/9 of 55?

  1. Multiply the whole number by the numerator of the fraction: 55 × 2 = 110
  2. Divide this result by denominator of the fraction: 110/9 = 12.222222222222

Since 110/9 is an improper fraction, the result could also be expressed as a mixed number: 12 2/9

How does it work?

The principle behind finding a fraction of a number, such as 2/9 of 55, is rooted in the method of cross-multiplication.

Consider the following proportion: 2 9 = x 55 (where x represents 2/9 of 55)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 2 × 55 = 9 x
  2. Which gives: 110 = 9 x
  3. Divide both sides by 9 to isolate x: 110 9 = 9 x 9
  4. Which gives the result: 110 9 = x

Thus, 2/9 of 55 is equal to 110/9 (or 12.222222222222 in its decimal form).