How to easily work out percentages

Something as neat and efficient as this will never be taught in public education... 🤦

Now do 41% of 30…

This isn’t a hack but just obvious math if you understand that percentages are decimals. 20% of 160 = .2 x 160 = 32.

This is a horrible shortcut, common now in education. The kid gets in the real world and can't figure out percentages because of crap like this.

Surprise! It’s the first time I see this method!

If you're looking for easy ways to work with percentages, here are a few common scenarios: 1. Calculating a Percentage of a Number: - To find, for example, 20% of 80, you can multiply 80 by 0.20 (which is the decimal equivalent of 20%). 2. Percentage Increase or Decrease: - If you want to find the percentage increase or decrease from one value to another, use the formula: \[ \text{{Percentage Change}} = \left( \frac{{\text{{New Value}} - \text{{Old Value}}}}{{\text{{Old Value}}}} \right) \times 100 \] 3. Percentage of a Whole: - To express a part of a whole as a percentage, divide the part by the whole and multiply by 100. For example, if you have 8 red balls out of 20 total balls, the percentage of red balls is \( \frac{8}{20} \times 100 \). 4. Finding the Original Value after an Increase or Decrease: - If you know the percentage increase or decrease and the new value, you can find the original value using the formula: \[ \text{{Original Value}} = \frac{{\text{{New Value}}}}{{1 + (\text{{Percentage Change}}/100)}} \]

there it was... staring us in the face the whole time. betr l8 than nevr

why is this even here.... how bad is your math?🤣

It's great. Teachers should have these kind of skills.

Why ? just do: 1) 0.4*3 = 1.2 =12% and so on