How the Japanese Do Multiplication.

It's not difficult, looks easy, just unnecessarily extra as I don't regularly carry a pencil box of crayons in my pocketbook.

 

[Meta_Conscious]

so y'all just gonna ignore the fact that its a method for kids to learn the fundamentals?

its not for adults (apparently)... I am disappoint...

 

[jono]

If I learned how to do it then it would make more sense. Its an interesting way to learn.

 

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[DarcSkies]

Japan is like third in math skills, we r like 25... Perhaps we should look at their methods with a little more respect...

B-B-B-But....

AmURka's the Greatest Country in the World...

 

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[TheFix]

so when it come to 75 x 48, you mean to tell me? I'm in math, not art muthafucka. I can solve that in 30 seconds, without drawin shit. No calculator.

 

[Meta_Conscious]

smh... so y'all really think this is used for more complex calculations? sheesh... lock this thread before it gets worse, b...

 

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[Amotekun]

Fuck the metric system. How the fuck you do carpentry or work with tools off the metric system.

Whats a 5/8 wrench in metric?

 

[Gold_Certificate]

Every calculation is complex when you have to draw out a game of "pick-up sticks" to do them.

This shit probably isn't even Japanese.

 

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[Gold_Certificate]

Art is shit, I would not sully beautiful math with it.

 

[Amotekun]

the real fiat would have welcomed the challenge.

The real fiat wouldve already talked about how he mastered that shit when he was

three and how this method is mad inferior when it comes to vedic math.

 

[Gold_Certificate]

75*48=300*12=3600

No need to even do anything special.

 

[Gold_Certificate]

Art is shit, I would not sully beautiful math with it.

what about fractal art?

Shit.

 

[TheFix]

so when it come to 75 x 48, you mean to tell me? I'm in math, not art muthafucka. I can solve that in 30 seconds, without drawin shit. No calculator.

this is what i do in my head

75 X 48= 100 X (7 X 4) + 10 X (5 X 4 + 7 X 8) + (5 X 8)

=100 X 28 + 10(20+56) + 40

=2800 + 760 + 40

=3600

kinda similar to the trachtenberg system, but it doesn't scale as nicely as the digits increase

This is what I do in my head....

75 x 10 = 750

750 x 4 = 3000

then add 75 x 8 = 600

3600.

Multiples of 10 are a key tool in any complex math. That and organizing your thoughts.

 

[Already Home_17]

they make that shit look so complicated when its easy af

13 x 13 is 169, so subtract 13 to get 156

or

12 x 12 is 144, so add 12 to get 156

multiplication is just repeated addition. just add the first number *13* over and over based on what its being multiplied by *12*. eventually it should come to you

now when it comes to the multiplication kai just did.....

shit never lets me down

 

[VIBE]

I'm a shit for brains in math.

 

[BiblicalAtheist]

That's pretty neat, but you have to start adding numbers also if the top right lines are double digits.