Thread 514137763

China > Japan > Korea

>>514137763 (OP)

Interesting tecnic...seeing that first time.

>>514137763 (OP)
I don't get it, where did 3 and 6 come from?

I don't get that second approach. Seems cool

>>514138040
100 - 97/94

China
>makes shit up, cheats, as always
S. Korea
>does the real work

makes sense to me

>wow she knows a faster algorithm for elementary school math
>China numba wan!!!

>>514137884
Wrong
Japan is by far the strongest east asian country and south korea is by far the weakest.

Inb4 doginawok.webm chinanumbawan etc

>>514138040
100-97 and 100-94

>>514138040
Counting down from 100 I guess? This is blowing my mind.

>>514137763 (OP)
does this kind of math work so quickly when the numbers aren't conveniently just below 100?

I got it wrong. I did 100 times 100 and then substracted 3 times 6.

>>514137763 (OP)
now try it with 3x3, 4x4, 5x5,... digits

>>514138228
Japanese are the niggers of Asia

>>514137763 (OP)
Nice trick, probably too limited for larger numbers.

>>514138359
lolno
which is why decent schools teach you the left side, because it literally is applicable to numbers of any size

Does it matter if both are ahead of the rest of the world?

>>514137763 (OP)
okay but how does this translate to a chink/gook riding my BWC?

>>514138426
You still butthurt about some faggot islands japan not giving away?

>>514137763 (OP)
Getting tired of your shit wumao.

>>514138958
Are you living in a separate reality? Japan wants our islands, not the other way around.

>>514137763 (OP)
>only suitable for numbers close to 100
yep, Chinese jank that is only applicable for a very specific situation

>>514137763 (OP)
CHINA NUMBA WAN

>>514138705
That's the thing, you learn stuff like that in elementary school to comprehend number systems, the chink version looks fucking esoteric in comparison. Pretty sure the chinklet had to learn the regular way too.

>>514138359
The pepsi version is the Universal one that works for every number, the chink version is just a cheap trick that works in that particular case

>>514138359
No that trick literally only applies to the 90s.

>>514139344
Impressrive

>>514139186
All those islands belong to japan. You seem confused.

>>514140208
They are under Russian control. How the fuck do they own them? On all levels but physical?

>>514137763 (OP)
Why are thirdies so obsessed with showing off math tricks?

>>514137763 (OP)
Now do numbers above 100 and watch the chink have a melt down and stab half a kindergarten in fit of rage.

China's self reported IQ tests are bogus. There are 200 millions peasants in China who are shoveling shit and have no electricity. China's real mean iq is probably around 98-100.

>>514137763 (OP)
0/10 no tail.

>>514141249
>that speck on the edge of the pipe bowl
Kill yourself JustPassingThrough.
KILL YOUR FUCKING SELF.
https://ponerpics.org/2065473

>>514139609
cool it with the racism chud

>>514138692
>>514138359
it doesnt work at all with other numbers than 9x and 9x
75 x 94 already crashes

>>514138359
Yes. It works for all numbers less than 100, and it's easy to extend it to work with larger exponents too. Here it's 97 * 94 = 97 * (100 - 6) = 9700 - 6 * (97) = 9700 - 6 * (100 - 3) = 9100 + 6 * 3 = 9118.

You could just as well pick, say 75 and 83: 75 * 83 = 75 * (100 - 17) = 7500 - 17 * 75 = 7500 - 1700 + 25 * 17 = 5800 + 425 = 6225.

>>514140686
history of chinese aircraft carrier programme makes it kinda impossible for them to have 98-100
more like 88-90

>>514142526
https://worldpopulationreview.com/country-rankings/average-iq-by-country

lol

>>514142741
>india 99
lmao
retard

>>514142958
Same as you, lol. No wonder they call Poles the jeets of Europe.

>>514142741
>india 99

>>514143130
no wonder they call you monkey if you treat such sources seriously
want banan?

>>514138040
>brazil

>slightly faster computation algorithm that only works for 2 digit multiplication
>smart
Most math was developed by white men

>>514143302
Don't feel bad about it, rajeesh. At least you are 0,2 points above your Indian brothers. You both have a strange obsession with toilets too, lmao.

>>514137763 (OP)
The trick spelled out:

97 × 94
= 100 × 94 - 3 × 94
= 9400 - (300 - 3 × 6)
= 9400 - 282
= 9118

>>514142741
>mongolia 103
>india 99
>norway 98
>denmark 97
how am i supposed to take this seriously?

>>514137884
Fpbp

>>514143724
>India 99
>Poland 99

Sounds legit

>>514137763 (OP)
>>514138162
oh.... the chinese one is pretty cool and very easy.

>>514142489
im a brainlet I think I need to find a paper and pen

>>514143606
>strange obsession with toilets too, lmao.
you are the one who keep talking about toilets and you honestly belive pajeets in india are on average smarter than norwegians danes and swedes steppe retard
one of the reasons normal people point fingers at you and laugh to the point your government declared almost all white/semi-white countries your enemy

>>514142489
yes retard but now you are just doing algebra and doing more work than the normal method

>>514143854
for the guy who gets droned 4th year in the row to save russian people maybe

>>514137763 (OP)
>unsheathes calculator
heh, better luck next time...

>>514137763 (OP)

I still like Koreans more than chiggers. Koreans aren't ashamed of eating dogs and cats. Chiggers will go out of their way to hide the fact.

>>514143921
>POLAND SUPERPOWER BY 2030, SAAAR
>IS THIS A LIE ABOUT POLAND, BLOODY BASTARD
>WHY DID YOU MAKE THIS LIE ABOUT POLAND?

You even sound like jeets, lmao. No wonder you share the same IQ too

>>514143364
> Belarus

>>514137763 (OP)
That's not being "more intelligent", that's just a different calculation technique, really just a fancy math trick.

I prefer the left because you actually calculate through the operation. Children should learn to calculate, use their head, and not
learn fancy techniques to calculate faster on paper. You can be fast later by using a calculator.

>>514144186
point stays keep talking to yourself you mindless monkey

>>514137763 (OP)
It's a stupid party trick that only works with numbers close to 100, 1000, etc.

>>514138426
>Niggers of Asia
Anon, thats...

>>514144416
>FUCK OFF MONKEY BLOODY BASTARD

lol

>>514137763 (OP)
China only allows selected schools to take part in these tests - e.g. rural schools.
You don't have to be smarter if you know how to cheat properly.

>>514139344
What's the point lmao? Just use a calculator instead of trying to be shitty one

>>514144563
>lol

>>514137763 (OP)
South korea is full of jeets
China is full of systematic cheating

>>514144636
Taiwan is ethnically the same and they have the same results. Are they cheating too, lmao?

>>514140316
Japan has a historical claim to them. A special military operation will soon start. The islands will be reclaimed.
The japanese are 10x more motivated than russians.

>>514137763 (OP)
How did the little genius do it? Round it up to 100 x 100 and then subtract (3+6)? And then multiply these two digits to get the last two of the equation?

>>514137763 (OP)
its funny that this ironically exposes the problem with chinese culture and mindset
the video is just a big lie using shortcuts to appear superior
much like every single thing out of that country

>>514144669
I couldn't tell if it was a Pole, Ukrainian or Russian.
East europeans kek

>>514144806
>ethnically the same
It's a little more of a jap bag on Taiwan than han

>>514144848
Two weeks

>>514144940
They are culturally more Jap, but ethnically its Han people fleeing to the island with a bit of natives.

>>514137763 (OP)
10,000 - 300 - 600 + 18

What kind of nonsense are they teaching them?

>>514137763 (OP)
About 9200

>>514137763 (OP)
the chinese onevseems bad, the purpose is to scale

>>514139020
China reaction to the China flu:
>It does not exist and I will throw you in jail if you says otherwise
or
>I will weld your door and stop your from leaving your building even if it is on fire
and only one of those.

>>514137763 (OP)
>Weaker soft power than Korea is with kpop
>Samsung better than any Chinese company
So much intellect

>>514138223
It's merely faster, but doesn't really indicate what's going on. A perfect example of Asian "high intelligence".
>I give answer
>Yes but do you understand what you did?
>I give correct answer, no?

>>514144959
I looked it up. No joke, those islands actually belong to japan.

>>514144806
Fact yes - this is quite common in South East Asia because it means national prestige.
This has been an open secret for 20 years - why do you think chinese people still send their kids to the US for 2 years after top chinese universities? Because the education is actually pretty shitty because it consists of nothing but memorization. In the USA they are supposed to learn creativity.

>>514145305
Cope

>>514144934
its because you arent very bright
even assuming we look exactly the same you can clearly tell who he is

>>514145261
the left version scales better, I see no benefit to teach the right version

>>514145352
Reality.
And can we at some point skip the point at which you are larping as Chinese?
China is cool and I'm its friend.
Do you notice how sultry that comes across?

>>514145404
Could still be Poland.

>>514137884
There is only one Korea and its capital is Pyongyang, and its on the same rank as China

>>514137763 (OP)
>98 x 95 = nig
>100-98 = 2
>100-95 = 5
>98-5 = 93
>2 x 5 = 10
>98 x 95 = 9310
It's real, do any chinks care to explain this sorcery?

>>514145540
>Reality.

99,6 IQ has spoken

>>514137763 (OP)
nigger this is just hooked on phonics

>>514145636
North Korea has no global influence. It can barely sustain itself.

>>514137763 (OP)
My Taiwanese buddy says both Koreas are fake countries and that they’re rightful Chinese clay, but Japan has developed enough separately to be considered fully different from China, even though it has Chinese roots

>>514137763 (OP)
Shit, we were taught math bad on purpose?

>>514145636
North Korean men have a significantly longer lifespan than Russians.
Even most niggers in africa statistically have more of a life.
Russian women age damn badly - is that the reason?

>>514137763 (OP)
When all you care about is doing tests real fast, this kind of thing matters. I have a phd in math and am an engineer. I work with many shades of non-white, and the chinks are not the best at problem solving.

>>514137884
>>514139186
>>514143606
Japan economic mog entirely of Russia

>>514145936
>My Taiwanese buddy says both Koreas are fake countries and that they’re rightful Chinese clay,

Not really. Koreas have existed as separate entities for a long enough time to be considered their own thing. China through history never annexed them, although could.

>>514138281
So it's specifically easier at higher numbers and would take longer in midrange numbers while the south Korean method is more consistent. Basically a meme vid where the chose an equation that favors the chines method

>>514145595
lmao you are detached from reality mongol

>>514146307
Don’t be racist toward your fellow Tatars minority

>>514146443
im not im just laughing at russian retards

>>514145286
Argies cry the same thing about the Falklands
Possession is nine-tenths of the law.

>>514145657
98 x 95 = (100 - 2) x (100 - 5) =
100 x 100 - 100 x 5 - 2 x 100 + 2 x 5 =
100 x 100 - 100 x (5 + 2) + 10 =
100 x (100 - 5 - 2) + 10 =
100 x 93 + 10 =
9300 + 10 = 9310

I don't know if it's visible, but basically it's just reformulating an operation into something that is easier to process such as 100 x 100 minus a relatively small amount which you can do quickly by just looking at the small amounts.
As the numbers diverge from multiples of 100 or 1000 or whatever power of 10 you're close to, the trick requires a lot more finetuning.

>>514145936
thats literal projection
look at a taiwanese rat saying that when theyre seconds away from getting hong konged at any moment

>>514138162
so it's a gay trick only for specific cases

>>514137763 (OP)
They aren't Americanised

>>514138040
>where did 3 and 6 come from?
Your mom and after I buttfucked her.

>>514145657
a * b = c
100 - a = x
100 - b = y
(a - y) * 100 + x * y = (a - 100 + b) * 100 + (100 - a) * (100 - b) = a * b

>>514145150
It's just a way to teach multiplication for a more intuitive geometric understanding (for those who don't understand that). You're just subtracting rows and columns from the 100x100 square and then adding back in the overlapped section. Also teaches you some algebra too. (100-n)(100-m)
10,000 - 100n - 100m + nm

It's useless though if they don't teach you why it works.

It's the jeet/turd world mentality of "faster = better" by using shortcuts and tricks.

>>514137763 (OP)
Why bother learning either method when chatgpt can solve it faster?

>>514139186
Says the cunt who's dictator seemingly just takes land when he wants it and justifies it with a retarded history lesson

>>514147444
Point being? Doesn't change the reality that Japan wants those islands and yet cannot have them.

>>514137763 (OP)
I'd do 100x94=9400-3x94(=300-18)=9118

>>514137763 (OP)
Weird flex. Almost highlights insecurity.

>>514137763 (OP)
That's a cute parlor trick.
Now have both of them do 77x135.

>>514145025
>They are culturally more Jap,
No they're not. Most of them are from Fujian province and speak a Min dialect or other southern mainland dialects but the national language is Mandarin.

>>514137763 (OP)
>South Korea
>shows work

>China
>doesn't show work

>>514147415
>go to site
>cloudflare circle spinning
>click the box, goy
>find the fucking bikes, faggot
>you must log in
>open account
>provide your phone number
>verify your email

now do the same test but with 3x6

>China needs to compare to a small population of like 52 million using a random tiktok I didn't bother watching

that's why I know op feels mogged by Koreans

>>514138415
>3x3
easy :
100-3 & 100-3
97 & 97
3 - 97 = -94
97x97 = 9409
-94 cancel 94 leaves 09
3x3 = 09

Chyna wins again.

>>514137763 (OP)
how the fuck did the Chinese one work? I see that she wrote down the difference from 100 of both numbers and then multiplied them, but it isn't that simple. to calculate it that way you have to say 10000 - (3 * 94) - (6 * 97) - (3 * 6), there's no way she just did that in her head. China dumps out bullshit propaganda videos like this constantly though.

>>514138415
>4x4
100-4 & 100-4
96 & 96
4 - 96 = -92
96x96 = 9216
-92 cancel 92 leaves 16
4x4 = 16

>>514137763 (OP)
MY CUTE CHINK CUNNY IS THE BEST CALCULATOR!
NO MINE IS!

>>514138415
>5x5
100-5 & 100-5
95 & 95
5 - 95 = -90
95x95 = 9025
-90 cancel 90 leaves 25
5x5 = 25

Total lingling victory

>>514148370

It really depends on who you ask.

>>514137763 (OP)
chinese propaganda is so fucking cringe

>>514137763 (OP)
What fucking method is going on there on the right and why didnt they teach that to me when i was a kid? I swear american schools are designed to make people stupid.

>>514137763 (OP)
I'm pretty sure the Chinese method doesn't work with any number other than ones starting with 9.

>>514144416
One of these dumbasses has airpods and the other has a wired headset. That means they are not able to hear their surroundings, and worse, they have potential drone magnets in their pocket.

>>514150085
See >>514142489

>>514145025

>Han people fleeing to the island

Most of the people just immigrated there looking for work or women or whatever. Only a very small portion of the population “fled” there.

>>514149490
bruh...

>>514145816
They are very proficient in siphoning money from the west and they are independent from globohomo kike bs

>>514146626
That's different i won't side with south americans on anything.

>burgers seething in the thread
Any time china is mentioned, those niggers come to cope and seethe

>>514138162
but 100 - 97/94 = 98.968

Only morons think being good at math is the highest indicator of intelligence. Also both those girls are Chinese.

>>514144042
Algebra is designed to make math quicker and/or find solutions to more complex problems
If you can find an algebraic solution to a normal problem, then you can streamline it to be more efficient in finding the solution.

>>514146277
Yes it's a stupid video.
On the left is a general algorithm that always works, on the right it's a quick trick for some specific cases

>memorize shortcut
>ohhhh so smaturu
chinks really think like this btw

>>514149490
Fwiw I did that in my head, btw it's + (3 * 6)

>>514137763 (OP)
where 91 from?

>>514138426
>niggers of Asia
>posted by a russian
pottery

>>514152501
97 - 6

>>514152575
Thanks, bro.

>>514148437
Showing work is a subjective notion dependant on cultural context. The chinese girl did create some kind of annotations that other people familiar with her system could follow.

>>514149895
This is why the greens lost the recall vote. Chinks will never pretend to be Japs

>>514142489
Yea but it works better with numbers closer to 100. Nice parlor trick but as some say now you are just doing more work.

>>514138040
Subtract each from 100 get 3 and 6
Subtract 6 from 97 get 91 (treat as 9100)
Multiply 3 by 6 get 18
Add 9100 and 18
Get 9118
Mathgic

I await the day that the Mandate of Heaven returns to Japan and they take their place as the rightful rulers of Asia.

Reminds me a lot of Wrath of Math's videos where he goes over dumb mathematical tricks and explains why they're dumb.
https://www.youtube.com/watch?v=ZPakzeF3ro8

>>514137763 (OP)
my math teachers would have seethed if i did it the chink way
>nooooo you have to use boomer maths!!

>>514137763 (OP)
I will just do 97x100=9700-6(97)=9700-582=9118, but better just to use a calculator.

>>514137763 (OP)
I could solve it in my head even as a kid in 3 steps:
97x94 = 97x100 - 97x6
9700 - 100x6 + 3x6
9118

>>514142356
75x100=7500-6(75)=7500-450=7050

>>514150470
Rude

>>514138162
That's not it. 3 and 6 come from the last digits of: 9x7=63 and 9x4=36.

>>514138162
>>514146879
54 x 89
46 11
43 506
Yeah, seems like it's only for single digits.

>>514137763 (OP)
The real question is why do they all look the same?

>>514138415
just do it to the 10.
3x3=?
3X10=30
3X7=21
30-21=9
3x3=9

>>514156605
That’s a weak insult bro, you gotta come up with something better.

>>514156567
bigger number must be on the left
89*54
11 46

89-46=43 you add 00 and it becomes 4300

11*46=506

506+4300=4806

I was in going to math completions until 6th grade but because I was scoring last or second last in the team and it was kind of expensive because the economy was in the shitter in 2001 I give up.

There are 8 more tricks like this if you wish to calculate things faster It is useful if you go to a speed math completions. When I was kid there was this one I don't know how ti will be in english exacly but in bulgarian it was called "math kangaroo" this one was probably the biggest one. I was never good at the speed math.

>>514156710
HOOOLLLLYYY SHITTTT HAPOOOOOOOONING

>>514137763 (OP)
This isn't even algebra, it is just arithmetic, which is the most basic math of all.

China's obsession with it makes no sense, because it has no real world value at all.

>>514144186
But the hard truth is that russians envy Poland

>>514156710
>mexican intellectualsp

>>514153152
Bug pheromones don't count.

>>514153680

Ironically enough, Lee Teng-hui was technically blue not green.

>>514158477
the real redpill is that poles and russians are all secretly in love with each other and should just get on with the hate sex

>>514137763 (OP)
Thats not intelligence, its solving the same problem in 2 different ways. Retard.

>>514145435
It's math tricks like those "mind reading" ones where they make you do a bunch of math to guess the number. Completely pointless outside of specific cases meant to wow midwits who think being a bio-calculator is a good thing

>>514137763 (OP)
both of these are chinese by the way, commie countries have their students wear red scarves as part of their school uniform

>>514138426
That's rich coming from you

>>514138040
97 = (100 - 3)
94 = (100 - 6)

97 x 94 = (100 - 3) x (100 - 6)
(100 - 3) x (100 - 6) = 10000 - 300 - 600 + 18
9700 - 600 + 18 = 9100 + 18
9100 + 18 = 9118

In the wilderness counting to ten is enough. In (joke) civilization you have calculators.

>>514137763 (OP)
cun

9400
-97
-97
-97

You can do it in your head. Not blacks of course but anyone else.

>>514162469
Disregard that. I am drunk.
9400
-94
-94
-94

>>514137763 (OP)
I’m a bit older so I’ve never seen the Chinese method.

>>514137763 (OP)
>common core
>:(
>common core, china
>:)

Common core math is woke. America's kids are literally cooked

>>514137763 (OP)
china still seething about gooks as usual, go build another great wall you retards so you can learn more math while we rape your women

>>514163035
I am a bit white, so I have never seen the chink method.
This is all performative bullshit like showing off your skills at chess anyway.
Calculators are cheap and omnipresent around us.
And the general method used by the girl on the left is a simple, general algorithm on which you can always rely unthinkingly. The method of the girl on the right is a cool party trick for nerds.

>>514137763 (OP)
>Chinese wins
where does she get the 6 from tho?

gooks are militarily superior to chinks and the japanese, the seethe is real

>>514144391
I agree, but tricks and shortcuts are valuable to know for those that like doing mental math. I was able to do it faster than the SK girl in my head using the trick (100*94-94*3). It’s easily applied in most cases.

Doesn't work with larger numbers nor with different radix. European way is superior. If the CCP teaches this to their students, they must have different algorithms for each radix. European system uses the same algorithm for every radix.
>>514137996

>>514161657
Thank you, that's the clear method. it works better when the rounded up value is nearby and easy to multiply.

>>514137763 (OP)
>two chinkettes doing math
>lable one korean
>this is suppose to show how great bugland is or some such
Why are they like this?

>>514137763 (OP)
These are cringe. There's always one from different countries that try to make one country look clever, like India vs China or whatever but all countries learn the left one.

>>514164118
chinks think theyre clever but they literally had to build the great wall of china so the gook sieges would end

>>514138426
Speak for yourself

then try to invade korea, and fail, like the japanese that tried to invade korea and failed

>>514137763 (OP)
The South Korea method is superior to whatever the fuck the China girl did

>>514164025
its all to distract from the lack of teaching abstract thought. (critical thinking)
traditional chinese > simplified chinese
english has several retardation cycles and resistances culminating in kek
pick a language. same pattern, same faggots selling/publishing the books.

>>514145435
Right version is great when you can't afford calculators.
China has no excuse.

>>514139344
bruh what the fuck are those autistic little shakes

I used to do that in my head at 10.
JFl

>>514137763 (OP)
why is op always a faggot

>>514137884
>>514138426
This nigga knows Japs are niggers of Asia but they are the worst in tech and science

>>514137996
You bump it to 100x100 then add the remainder.

A smart 7 year old would figure this out by themselves.

>>514164025
I did it much faster in my head than both of them…
>24*4.5
>24*5-24*.5
>120-12
>108
Takes a few seconds.

>>514139344
ming-tat

>>514137763 (OP)
The Chinese girl didn't show her working, she gets half points.

I hate the Spanish for trying to turn Japan into another Brazil

>>514164364
It's the common way we teach in Europe.
97
94
>start from lower right
4*7=28
write 8 down put 2 in memory
4*9=36 add 2 from memory makes 38
you get 388 like in the video
>continue:
9*7=63 write down 3 put 6 in memory
9*9=81 add 6 from memory
you get 873 like in the video
>continue:
388+8730=9118

This system works with any numbers and radix. It's the simplest way to do real math.

>>514166744
Portuguese* we didn't interact much with them beside the one samurai-conquistador incident and a very successful embassy

>>514161657
thanks for posting the proof Italianon.

>>514163403
And the difference in time between them wasn't that great anyway. Just a few seconds shorter, and for this particular case (I'm sure there's a worst case scenario for the Chinese way, as another anon said, when the numbers are distant from 100 and such).

>>514166011
More simple way is
24*4+12 because 0.5*24=12

Interesting to notice you'd use substraction. German car manufacturers use this system in their ECUs. For example Bosch loves to compare values from two different sensors.

>>514137763 (OP)
dot product way
[90, 7] * [90,4]
= 90*90 + 90*4 + 7*90 + 7*4
=8100 + 360 + 630 + 28
= 9118

>>514137763 (OP)
Egyptian Peasant multiplication is extremely easy to teach, works with any base system, and is also a very easy way to teach kids about binary, which you can then springboard that into a basic education about computer science. Both of those methods in that video are inferior to Egyptian Peasant multiplication/division.

>>514138209
all these faggy tecniques, schools abusing and forcing kids to study 14 hrs a day, high suicide rates, insane nation wide exams that drive kids to depression....just to have a lower GDP than lazy spaniards studying 5 hrs a day with a siesta in the middle.
asian bugs will always remain asian bugs

>>514137763 (OP)
>>514164025
What is the measurement of "better" here exactly? The total time taken to write the steps on a chalkboard? Seems arbitrary

>>514154251
That retarded.
It's just a most efficient way to do this without understanding the math behind it...
Hence we learn the standard way in the west. You can't always cheat your way out science.

>>514138223
a very specific usecase for elementary school math... when the number is close to 100

>>514137763 (OP)
The Chinese system of teaching Mathematics is a system of learning tricks that will help you do basic mathematics.

It doesn't teach you why it's true. The method on the left does.

That being said, most people only need to tricks because they don't really need to understand why math is the way it is and just need to know the solution. It's perfect for the masses which is good enough for 95% of people and it's something China is actually correct about.

>>514137763 (OP)
I invented the right side method when my autistic ass couldn't pay attention during the one day they held the multiplication class and i had to come up with a way to multiply during the test.

>>514137763 (OP)
do in your head:
97 x 100 = 9700
9700 - 970 = 8730
90 x 4 = 360
7 x 4 = 28
360+28 = 388
400 + 8730 - 12 = 9118
easy peazy

>>514138040
The chink cheated.

>>514171825
or alternatively
94x3 = 282
9400-300+18=9118
you're a noob if you dont get it done in 10secs max

>>514171111
Let's see you do it then.
Using Ancient Egyptian multipication, prove
>1920x1280
(made it easy for you as these are exactly binary numbers)

>>514137763 (OP)
Because the Koreans use American math

>>514143717
>97 × 94
>= 100 × 94 - 3 × 94
>= 9400 - (300 - 3 × 6)
>= 9400 - 282
>= 9118
100 - 97 = 3
100 - 94 = 6
97 - 6 = 91 first digits
next 2 digits 3x 6 = 18
9118

try 97 x 98 still works
I wonder
87 x 84
13 16
87 - 16 = 71
13 x 16 = 208
use last 2 as last 2 digits 08
use 71 + 2 ( from 208 ) as first 2
7308

Mine - More like the trick, your way looks more straight fwd, guess I am not connecting those dots between them, but tired

>>514137763 (OP)
Now do 468x576. Oh wait that will make your stupid chink video pointless.

>>514137763 (OP)
Why are Asian girls so talented

>>514164025
You can do that even faster with a calculator lol

>>514164025
Took them ages to do that one.
4 X 24 = 96
12 X 0.5 = 12
= 108
I knew the answer before they even wrote the first line and they had an advantage

>>514174027
Prove what? Did you mean solve?

>>514175567
>24 X 0.5 = 12
My bad

>>514137763 (OP)
it looks like the chinese girl used a trick that only works in certain cases, so, sure, she's "smarter" because she was taught the trick, but in most other cases she would have to use the method that the korean girl used. btw, another "trick" way to do it is: pretend it's 100 x 94 (you get 9400, easy peasy), then you know that it's just 3x94 less than that, but this is easy too because you just pretend it's 3x100 (300) less than that, so you get 9100, but you know that it was 3x6 higher than that, so you add 18 to get 9118. i imagine this is the full thought out way that the chinese girl's method uses. again, it is really only valuable/useful in certain situations (eg: where both numbers are close to 100). it really is useless when the numbers are lower than the 90's

>>514137763 (OP)
You don't need math to prove how retared south gooks are. They are so fucking retarded that they chose to circumcise themselves without any jewish trickery.

>>514137884
Korea has been leading Japan in every aspect that matters for decades now.

>>514176275
>without any jewish trickery
are u sure the imported american evangelicalism since the cold war isnt a jewish trick

>>514176275
>without any jewish trickery.
lmao you're oblivious to reality
as chileanon said, they got the american virus injected (full of jew trickery)

>>514137763 (OP)
Those chinks need to be doing common core, not chink math

>>514175736
Yup

>>514139344
This looks like a form of torture

>>514177101
>>514176943
>In one single generation, the circumcision rate of south gook risen from 0% to 90%
That was no jewish trickery. Grown ass gook men took their sons with them to get their dicks chopped off because they saw Americans having circumcised dicks as being superior.

>>514146762
>reformulating
factorization

>>514138109
because that method isn't taught outside niche circumstances. its only faster with numbers above 90. similarly the sophie germaine identity works for use cases where the numbers are within 13 of each other:

(a+b)(a+c) = (a^2) + (a(b+c)) + (b*c)
>97x94
>90x90 = 8100
>90(7+4) = 990
>7x4=28
>1018+8100=9118

this is a more useful version, but to be quite honest once you get over 39x39, it becomes sparingly useful. similarly other shortcuts exist for numbers like 79x79
>79x79
>80x80= 6400
>(2(80) - 1) = 159
> 6400-159 = 6241

the problem with all these shortcuts is they look flashy and useful, then once you start applying them the amount of them you need to know vs just being able to do the base calculations becomes limited in usability, but i mean hey the chink looks smart in this one instance

>>514164000
almost all math you do by hand is base 10 baka

>>514137884
north korea > south korea

>>514180366
In computer science you also do 2,6,8 and you also have to convert them. Most modern languages have tools for it though, but in university classes you have to know how to do it on paper. But we did 10 to 2 and 2 to 10 conversions on paper and had it in our final test on the logic course.

>>514140686
>this level of cope
Of course its a mutt flag.

>>514144069
>>514143921
>>514144416
Is it possible for poles to go one day without seething about Russia? Seems impossible.

>>514175736
Ok I'll do 192x128 (and then multiply by 100) using the "Korean" style:

192
128
>multiply
1536
3840
19200
>sum
24576

For the 1920x1280 it's
24576*100=2457600

Waiting for your Ancient Egyptian version.

>>514181307
Sorry, I went to dinner then my elderly mother called me to rant about her power bill and I forgot about this thread, also we just call what the Korean did long multiplication here.
1920 = 2^10 + 2^9 + 2^8 + 2^7
1280 = 2^10 + 2^8
so 1920 x 1280 = (2^10 + 2^9 + 2^8 + 2^7)(2^10 + 2^8), which can be simplified to 2^20+2^18+2^19+2^17+2^18+2^16+2^17+2^15.
when you convert those to base 2 you get:
0100000000000000000000 +
0001000000000000000000 +
0010000000000000000000 +
0000100000000000000000 +
0001000000000000000000 +
0000010000000000000000 +
0000100000000000000000 +
0000001000000000000000 =
1001011000000000000000
which in base 10 is 2457600
If a person needs to do multiplication or division of large in real life at any point in the future of humanity, they will have a calculator available, and if they don't have a calculator, society has probably completely collapsed and they will have more pressing things to worry about. So the purpose of learning arithmetic is to prepare them to learn other mathematics. Long multiplication is now a party trick or historical curiosity, like cursive or napping an arrowhead out of flint.

>>514183455
*of large numbers

>>514137763 (OP)
>all the well poisoning ITT
Friendly reminder that education has been intentionally sabotaged; made needlessly difficult to give plausible justification to cheap immigration, also to hide the fact that modern "success" IS in fact a limited resource (the system couldn't function if everyone were a college grad sitting at a cushy desk job), and that the system REQUIRES "losers" (wageslaves) to function. ANYONE can be intelligent, successful and productive if they're taught the most path of least resistance ways of doing things.

>>514184651
my opinion is the chinese have been through a thousand years of constant warring states with each other

>>514185014
Did you respond to the wrong post by accident?

>>514183455
>>514184651
>>514185060
nobody fucking cares. stop bumping a fucking dogshit dead thread.

>>514137763 (OP)
Overseas Chinese here: Korea is unlucky, it was the slave of Japan for decades, Japan stirpmined Korea and subjected their women and girls to sexual slavery, like Nanjing Massacre but for DECADES. For Korea to still come out as a democracy is stunning. Compared to Japan, Korea is very materialistic but they don't have much resource to go around per person, there is a huge homelessness problem in Seoul -- that might resolve itself in time as the birth rate drop -- they just need to handle the issues caused by more old people than young -- but having less people is NOT a bad thing. Korea is just going through growing pains. Koreans is already talking about their problem with materialism and lookism. Maybe their Gen Alpha will grow up with idols that don't have plastic surgery or no idol at all,

>>514137763 (OP)
This is common core bullshit isn't it

>>514183455
Sure thing but teaching kids at school I'm convinced that
192*100
+192*20
+192*8
Is much more simple than trying to teach Ancient Egyptian. It's easy for kids to understand multipication with numbers 10,100,1000 and so on. Learning long multiplication helps with e.g. 192*8 so in practice you only need to do that and add 192*20+192*100

And if 192*20 is difficult for a student they can do long multiplication with 2 and thus get the 384 which is then easy to multiply with 10.
So in this example you only have to do long multiplication by 8 and 2, write it down and then use 10 and 100.

Example
8*2=16 write down 6, put 1 in memory
8*9=72 add 1 from memory, makes 73
write down 3, add 7 in memory
8*1=8 add 7 from memory, makes 15
write down 15 and you get
>1536

2*2=4
2*9=18 write down 8 add 1 in mem
2*1=2 add 1 from memory, you get
>384
now multiply with 10 and you have
>3840

The last number to sum is 192*100, thus
1536+3840+19200
and to get the sum on paper is the same algorithm as in long multiplication.

It's about consistency and the fact that students start to trust their abilities. Learning Ancient Egyptian as some extra way isn't necessary a bad idea as long as it doesn't confuse students but it's certainly not a superior system in any way. It requires a lot more work and doing calculations in your head. Even the Ancient Egyptians had tables for most numbers so they wouldn't have to do them again, since they didn't have calculators. I just don't see how it would be a superior system. Do you teach kids?

>>514137763 (OP)
Happens if the two numbers are greater than 100 though? Do you subtract 200 from 114 or something? Also what if the number isn't close to 100 and it's like 37 or something? It would take much longer to figure it out with that weird Chinese method.

>>514185702
The russian peasant/ancient egyptian method can be taught in a much simpler method for the sorts of small numbers that kids will work with in their every day life, and you can then work in the more advanced way I demonstrated later without changing anything. You start with Russian Peasant version, where you just halve one side and double the other, and then you teach them the egyptian method where they pull out powers of 2 and work with those to simplify it for larger numbers. I actually taught myself multiplication and division like that without realizing that it had been done before, because my family moved during the year we going to learn long division and multiplication, and the school I moved to had already taught it, while the school I moved from wasn't going to teach it until later in the year. So I sat there at my desk and worked out a way to multiply and divide, since my class had like a hundred students and asking for help wasn't going to accomplish anything. So if a little kid can figure it out on their own and get through college calculus without ever actually having learned long multiplication and division, then it should be fairly easy to teach.

Nice.
Now calculate 75*110 in your head with either method.