Common Core
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You are currently reading a thread in /r9k/ - ROBOT9001
You are currently reading a thread in /r9k/ - ROBOT9001
https://www.youtube.com/watch?v=nFyxzFSXkN8
So I was on jewtube when I stumble on this, and I read the comments, how the fuck do you guys add / subtract / multiply / etc if its not like this?
I always assumed that's how people did things, and no I wasn't though that way, but I just learned it on my own.
If I were to deal with long numbers this is how I would go about it:
Just an example :349 x 29?
On MY head I do.
(300x30) -> 3*3 = 9000(add zeros) - 300 (because I rounded 29) = 8700
(40x30) - 40 = 1160 Same thing as above.
(9x30) - 9 = 261
Add them =10121
Also why everyone looks the same when I search for Korean porn.
First line:
9*9=1 carry the 8
9*4 (+8)=4 carry the 4
9*3 (+4)=31
(Step one: 9*349=3141)
New line:
Add a 0
2*9=8 carry the 1
2*4 (+1)=9
2*3=6
(Step two: 20*324=6980)
Final addition:
1+0=1
4+8=2 carry the 1
1+9 (+1)=1 carry the 1
3+6 (+1)=10
(Step three: 3141 + 6980 = 10121)
Conclusion: 349*29=10121
I find it easier to explain on paper
Also, plastic surgery and general homogeneity of asians
>>29811919
i grew up before common core, and it doesn't make a lot of sense to me because they don't go the direct route. they add a bunch of steps that aren't necessary unless you're lowest common denominator retarded.
for that problem I'd just do
350X30, (3.5*3) = 10,500
10,500 - 30 - 349 = 10,121
it's kind of the same thing I guess, but I don't need 19 steps to do it, because most of the math is so basic bitch simple that you can do it automatically in your head.
but I still don't think there should be one standardized method of solving a math problem if two objectively equal methods exist, especially if it's as convoluted as common core in regards to simple problems. it goes against the spirit of problem solving and against the simple fact that different people are more comfortable with different methods.
>Also why everyone looks the same when I search for Korean porn.
i don't know. i thought porn was illegal in korea. i imagine there aren't a lot of korean women who go elsewhere to do porn. it probably is the same girl.
>>29812952
>but I still don't think there should be one standardized method of solving a math problem if two objectively equal methods exist, especially if it's as convoluted as common core in regards to simple problems. it goes against the spirit of problem solving and against the simple fact that different people are more comfortable with different methods.
Basically this. I get that they want to standardize the way they do things, but telling someone they're wrong for doing it a different yet still correct way is major fucking retarded and I think that's why so many people are pissed with common core. It's like those dumbfuck tests they'd give you in school where two answers were right, but one answer was "more" right and you'd be 100% "wrong" if you didn't pick it.
