Skills › 🧮 Mental math

Swap a percentage to make it easy

8% of 25 is hard. 25% of 8 is easy, and it's the same number.

⏱ 20s

  1. x% of y always equals y% of x, because both are x × y ÷ 100.
  2. When one way is awkward, flip it: 8% of 25 = 25% of 8.
  3. 25% is a quarter, so the answer is 2.
Try it now: Work out 4% of 75 and 16% of 50 by flipping them. (3 and 8.)

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