What is 4/4 of 25?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 4/4 of 25? We'll show you a straightforward method to achieve that.

How to calculate 4/4 of 25?

  1. Multiply the whole number by the numerator of the fraction: 25 × 4 = 100
  2. Divide this result by denominator of the fraction: 100/4 = 25
  3. Simplify by dividing both the numerator and denominator by their GCD (4):
    • 100/4 = 25
    • 4/4 = 1
  4. Which gives: 25/1

How does it work?

The principle behind finding a fraction of a number, such as 4/4 of 25, is rooted in the method of cross-multiplication.

Consider the following proportion: 4 4 = x 25 (where x represents 4/4 of 25)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 4 × 25 = 4 x
  2. Which gives: 100 = 4 x
  3. Divide both sides by 4 to isolate x: 100 4 = 4 x 4
  4. Which gives the result: 100 4 = x (or 25 1 = x )

Thus, 4/4 of 25 is equal to 25/1 (or 25 in its decimal form).