Amazing Method of Multiplication
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@LeTinctoire And ignore the =15 on the first line. >_<
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@doublepilot Assume x conc y = x * 10 + y is a left associative operator. Note that (x conc y = (x + y div 10) conc (y rem 10)) [intuitively: you can transfer the 'higher' numbers to the left side], where div and rem are operators for integer division and remainder. Then the result is
2*7 conc 5*7+2*3 conc 5*3=15
= 15 conc 41 conc 14
= 1 conc 5+4 conc 1+1 conc 4 [transfer high numbers to left part]
= 1 conc 9 conc 2 conc 4
= 1924
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Can you describe for me how you think. I don't understand :'(
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Have all you haters considered the possibility that this method isn't being presented as a "faster" or "better" way of multiplying? Maybe it's just fucking cool because it's an unexpected pattern for finding a solution. Could -you- have thought of a geometrical pattern that would do your arithmetic for you, irregardless of whether or not it was "quicker"? Somehow I doubt it. Appreciate it for what it is and not just what it can do for you.
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I for the future with this crap, NOW ,...21X42 =20 X 42, ( double the 42 [84] then stick a nought on [840] then add 1 X 42 = 882......er... is that too simple or what?.
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that sounds a wierd method, but i'm really cool with the traditional way,if you want to teach people something useful, teach them how they can do this calculation without a paper and a pencil (just in their mind )
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ya know? i calculate the same way, but without that shitty diagramm. why the hell should i draw it in the first place? i'm happy that they don't teach this shit in germany... well, i hope so. i don't know whats going on in elemantary schools these days
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i use a calculator
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good for baseball players
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what about 52x37 on this method?
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Exactly. Nothing amazing about this at all.
They teach this crap in school now, and by the time the kids are done drawing the damn diagram, people who multiply the traditional way have already solved the problem.
markgriz 2 years ago 27
Bullshit,'z . Just multiply like normal and it will be faster and less confusing.
SavetheStarving 2 years ago 18