Cette astuce mathématique virale provoque de nombreuses réactions du genre : « pourquoi n’avons-nous pas appris cela à l’école !? »

Cette astuce mathématique virale provoque de nombreuses réactions du genre : « pourquoi n’avons-nous pas appris cela à l’école !? »

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It is a rational equation, but not having thought about it in the first place…well let’s say I don’t feel as the most clever person in the room right now. 😀— Kamal DJAIDAOUI 🇫🇷🇬🇧🇮🇩🇩🇿 (@DjaidaouiKamal) March 8, 2019

 

Whoa…I teach Maths at primary level and had never realised this.50% blown away/50% going DOH! pic.twitter.com/4yhxgFSgDq— Magical Maths Notts (@MathsNotts) March 6, 2019

 

This sounds like something everyone should ideally have known in high school but I’m today years old when I realized I can’t think in even basic math— Sandhya Ramesh (@sandygrains) March 5, 2019

 

Cool. Thanks for helping get people enthusiastic about maths. You won’t believe this, but a lot of people find mathematicians rather smug and patronising. Crazy, right?— Ben Stephens (@stephens_ben) March 5, 2019

 

Fascinating little life hack, for doing percentages:x% of y = y% of xSo, for example, if you needed to work out 4% of 75 in your head, just flip it and and do 75% of 4, which is easier.— Ben Stephens (@stephens_ben) March 3, 2019

 

 

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