This percentages maths hack is blowing 100% of people’s minds everywhere
Here’s a maths hack that we reckon you’ll wish you’d have learned back in the day. And when we say ‘back in the day’ we mean when you were at school.
It went viral after it was shared by the good people of @todayyearsoldig on Twitter for reasons which will become apparent.
Why didn’t my math teachers ever teach me this…it’s so easy to see pic.twitter.com/uwEAej0gDy
— Today Years Old (@todayyearsoldig) July 30, 2023
100% mind blown (and we didn’t need a calculator to work that out).
this would have saved me HOURS bruh
— Kolt in Web3 🌐 (@CryptoKolt) July 31, 2023
Wow this looks incredibly useful. I can’t wait to forget about it in like a week lmao,
— Jesse James (@skydiveicarus) July 31, 2023
Just in case you wondered how this works …
If you want to know why it works, it's because 90% = 0.9, which can be represented as 9 x 10^-1. Meanwhile, 80 = 8 x 10^1. Since each is multiplied by 10 to some power, you just add the powers. 10^-1 + 10^1 gives you 10^0. Thus, you can multiply (9 x 1) x (8 x 1).
If you want…
— Peter Pike (@AuthorPeterPike) July 31, 2023
But we’re with this person.
now im confused thanks.
— michael (@frozenfearsz) July 31, 2023
This person thought they spotted a flaw.
Cool.
Do 15% of 55 and we see.
— THEE Emanzi 🔰🇺🇬🇺🇦⚽️🍺 (@emanzi) July 30, 2023
Except …
1.5 x 5.5 = 8.25
15% of 55 = 8.25— Dr. B. (@DCdoctr) July 31, 2023
Some people still weren’t impressed.
Because it's a limited-use shortcut that doesn't replace actual knowledge of how to calculate percentages.
— Alеksеy🇲🇩🇺🇸🇺🇦 (@LenerdoDicrapio) July 31, 2023
Tough crowd.
Source Twitter @todayyearsoldig
