The “fascinating little hack” involves flipping the numbers around to make things easier – and is described as “life changing”
Figuring out percentages can be a nightmare – especially if you haven’t got a calculator to hand.
For example, if you need to work out 18% of 50, swap them and go for the easier option of 50% of 18 instead. The answer for both is nine.
Another example is 4% of 25. Flip it round to work out 25% of 4 – and the answer to both is one.
Why is / was this not taught at school ??? (ask your teacher(s)…
