What is 10/1 of 40?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 10/1 of 40? We'll show you a straightforward method to achieve that.

How to calculate 10/1 of 40?

  1. Multiply the whole number by the numerator of the fraction: 40 × 10 = 400
  2. Divide this result by denominator of the fraction: 400/1 = 400

How does it work?

The principle behind finding a fraction of a number, such as 10/1 of 40, is rooted in the method of cross-multiplication.

Consider the following proportion: 10 1 = x 40 (where x represents 10/1 of 40)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 10 × 40 = 1 x
  2. Which gives: 400 = 1 x
  3. Divide both sides by 1 to isolate x: 400 1 = 1 x 1
  4. Which gives the result: 400 1 = x

Thus, 10/1 of 40 is equal to 400/1 (or 400 in its decimal form).