Interesting method used years ago in Russian area and sometimes still used by some today. You just cut numbers in half and double them... Video part of Mathtrain.TV.
@ChromeOSAccess Update! Chinese/Gelosia method is perfect for me, the highest numbers you'll ever have to calculate to get any answer including decimal points) is 9x9 or 9+9 aka primary school maths. No wonder china has a higher average IQ, they're not smarter, they're better taught.
@ChromeOSAccess Update! Chinese/Gelosia method is perfect for me, the highest numbers you'll ever have to calculate to get any answer including decimal points) is 9x9 or 9+9 aka primary school maths. No wonder china has a higher average IQ, they're not smarter, they're better taught.
ChromeOSAccess 1 month ago
Easier than the japanese method, gonna look for an even easier method, then I might not look so fick.
ChromeOSAccess 1 month ago
cool, i just might pass my math class
mycatz1 3 months ago
damn teachers in america teach us the hard way
anawsompizza 4 months ago
thankq
its so cool
nasreen021 4 months ago
thankq
nasreen021 4 months ago
whoa.
leonellus 5 months ago
Тоже в первый раз вот только сегодня на ютубе наткнулся. Столбиком круче.)
Dassilon 5 months ago
Ну я даже не знаю
Anticitizen00001 6 months ago
I'am russian and I never used this metod, and never knows about it...
TheKrIVel 9 months ago