What is 8/2 of 16?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 8/2 of 16? We'll show you a straightforward method to achieve that.

How to calculate 8/2 of 16?

  1. Multiply the whole number by the numerator of the fraction: 16 × 8 = 128
  2. Divide this result by denominator of the fraction: 128/2 = 64
  3. Simplify by dividing both the numerator and denominator by their GCD (2):
    • 128/2 = 64
    • 2/2 = 1
  4. Which gives: 64/1

How does it work?

The principle behind finding a fraction of a number, such as 8/2 of 16, is rooted in the method of cross-multiplication.

Consider the following proportion: 8 2 = x 16 (where x represents 8/2 of 16)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 8 × 16 = 2 x
  2. Which gives: 128 = 2 x
  3. Divide both sides by 2 to isolate x: 128 2 = 2 x 2
  4. Which gives the result: 128 2 = x (or 64 1 = x )

Thus, 8/2 of 16 is equal to 64/1 (or 64 in its decimal form).