>American education

>>134282734
Literally what? Why is this ok?

>instead of going a distance of 30 integers, go 300

How does this make sense?

>>134282734
Its literally to sell textbooks, materials, and training. There is zero problem with regular subtraction, they're just trying to fix something that doesn't need to be fixed.

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>>134283024
>>134283142
Why can't they just teach subtraction like in Poland? This was the only method that I was taught in schools

>>134282734

Why not just

>325-30 = 295
>295-8 = 287

That method seems awfully backwards

>>134283408
They did in my school, not that long ago. My state is like half CC so I'm as surprised as you.

>>134283541
They did this in all schools

>>134283695
Since when? That's some of the most retarded shit I've seen all week.

>>134282734
The thing about common core is theyre trying to teach people something that should be somewhat natural. Theyre trying to teach something that is common sense. And theyre really, really bad at it. It just looks like gobbledygook when written down. I thought we had done alright in math up until now. So some nigger in Chicago cant calculate the trajectory of a satellite to slingshot it round mars, who gives a fuck?

>>134282734

I'd tend to go with

25-38 = -13
300-13 = 287

I guess the brown folk can't handle negative numbers.

>>134283142
>How does this make sense?
Imagine you are progressive, where everyone is equal no matter what. But as you are teaching you see every day that certain kids of a darker skin tone do not perform as well. Now how do you rectify this belief against all apparent evidence while still virtue signalling how great you are?

BAMM! this bullshit.

>>134283541
> CC
What does it mean/stand for?

>>134283922
I always go like this: 325-25 = 300
300-(38-25) = 300-13=287

>>134282734
i would do 325 -25 -10 -8

am i retarded?

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>>134284005
Common core. Or if you have taste best code geass girl

>>134284057
if you were to do that calculation: 325-43 you wouldn't be retarded yes.

>>134284005
Common core

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Just use examples if the kid doesn't get it.

E.g. your house was worth $325,000 at the start of the year. In January, 10 niggers moved in down the street, as well as a paki family of 15.

If your property value plummets by $38,000 in the first month of them living there, what is your house worth now? What is your life worth, for that matter?

>>134282734

I knew common core was supposed to be crazy, but wtf is this?

What is the benefit of teaching it this way?

>>134284005
CC is common core, it's what democrats made because minority test scores (except Asians) were low so they made everything fucking retarded in hopes of making all kids equally retarded. It didn't even work either, white and Asians still have the best scores.

>>134284173
>>134284285
>>134284433

Hmm, I thought it was mandatory in every school, that's why I didn't figure this out. In Poland everything is state-controlled, hence every school has to have exactly the same ways of teaching shit, that also includes sex education or history

desu this is how i do subtraction in my head when its with really big numbers

>t. shift test engineer for nuclear reactor plants

>>134283922
this is how i do it

>>134282734
They never taught me this in any of the schools I went to in Illinois.

>>134284467
The U.S. is really hurting in education.in my opinion a state controlled system is the absolute worst because the federal government has no idea about every single problem students face. Poland is a lot smaller with fewer demographics so it's like you're a U.S. state in terms of how things should be run.

>>134282734
I'd support this for training people's mental maths. This is how I do complex subtraction in my head. It's a rubbish method for actual subtraction though.

>>134283973
why do i hve to learn about george washington and memorize dates about a shitty country?

>>134282734
It's just a method of teaching mental shortcuts during the early years of education.

For example multiplying 9 is mentally more difficult than multiplying 10, so if you're in grade 2, and you have a math problem: 9x6 it might not seem instantly intuitive to just instantly calculate that the answer is 54, so if you imagine that it's 10x6 instead (60) and then just subtract the 6 to get the 54, it's mentally easier when you're a small dumb child.

Just teaching shortcuts, obviously this isn't a practice that's continued into later years of education, this is grade 1-3 shit.

>>134284793
>Poland is a lot smaller with fewer demographics so it's like you're a U.S. state in terms of how things should be run.
True, we also do not have problems with IQ distribution, since everyone is white. Actually, we are increasing the difficulty in schools right now

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>>134284057
>some burgers

>>134284846
ive heard this argument
is it that when you are dealing with numbers that a human brain cant usually process this method works well?

>>134284867
A.) So history won't repeat itself.
B.) So you sound well rounded and not like a complete retard to all your peers.
C.) Because it's supposed to be interesting, but our generation is broken and immoral.

>>134283852
Same here, and I work with special needs kids.

>>134284867
What about HERstory

>>134283408
>Why can't they just teach subtraction like in Poland? This was the only method that I was taught in schools
Is that how you subtract in your head?

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>>134282734
Because nogs taught them mathematics

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>>134284317

>4chan math at it's finest

>>134282734
>>134285030

>>134282734
Remove H1B to see some more fun.

>>134284340
It's supposed to be good for mental math so you can count in your head when literally every kid carries an incredibly powerful calculator in their pocket at all times.

Supposedly it also helps teach fundamentals.

I think it just makes math look horribly intimidating since its making kids jump through hoops for reasons they don't understand when there are much cleaner methods to use like this one >>134283408

>>134282734
I used to find these things in fun time mathematics (rough translation).
Apparently they're trying a new approach .
It's not that bad you tard poolack, now go scrub a British toilet

>>134284793
There are two ways to solve the education crisis so things are equal, either make things so hard that everybody fails or make things so simple that everybody passes. CC is a way to brute force the problem by breaking down literally everything into the smallest discreet steps in the hopes that its so simple that even a nigger could learn it. But it's so rigid that it's actually discourages smart kids from excelling because they have a strict brain dead lesson plan to follow. There is a lot more to CC than OP has let on.

This works great because billionaires like Bill Gates who made CC can give this shitty approach to education to the masses and gate all the potentially smart but poor whites and asians in with the nigs and give a good education to the wealthy kids in private institutions. This way billionaires can be shepherds to the world while they push their vision for a new world global order because only their kids will rise to the top because they were the ones with the good education.

>>134283408
I am a teacher and the reason is to avoid automating the operation without quantification of numbers.
If you see subtraction done with different methods then you understand it better and some methods work better then others for some.

>>134288651
I never thought I'd say this, but I wish we were like China. At least in their system the best succeed because they had the highest potential.

>>134283408

this is how it is taught in most american public schools, too. or how it was taught before common core, i guess.

>>134288608
>It's not that bad you tard poolack, now go scrub a British toilet
easy there, cyganie

>>134288770
>I am a teacher and the reason is to avoid automating the operation without quantification of numbers.
>If you see subtraction done with different methods then you understand it better and some methods work better then others for some.

you fucking retard, if someone is smart enough then he will figure this out by himself
if someone is a fucking nigger, then he should just learn automating the operation without the deeper thought

This just seems like more convoluted. No want math comprehension is abysmal in this country. Fucking (((Bush))) and his No Child Left Behind shit are responsible for this.

>>134282734
I started doing this because it's easier. The way it's being taught is retarded tho.

>>134289129
*more convoluted method.
*wonder

I've been up two nights In a row studying for an engineering midterm...

>>134282734
>That will be $13.70
Here is $20
>Please wait 15 minutes while I calculate your change using common core.

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>>134284433
>so they made everything fucking retarded in hopes of making all kids equally retarded. It didn't even work either, white and Asians still have the best scores

>>134289256
I mean, add 30 cents to get to $14, the difference between 20 and 14 is six, so it would be $6.30. idk but I did this shit throughout college and it works fast, maybe it's just me tho.

>>134282734

graduated a top 10 uni
scored top 8% lsat without prep
130+ iq test even though that means nothing

this is how i do math, did it all in my head faster than i could read the text

you all are fucking retarded

Reminder that pendas is wrong.

>>134282734

Glaring flaw in the last step. You have to subtract 300 from 325 to know that you need 25 to count up. Having to subtract defeats the purpose of this stupid shit.

This is education has gotten so expensive. Schools across the nation will be buying this book for each student in the class at around $100 a book.

>>134289694
No, you count up from 300 to 325. You count up 25 times. That's how you know it's 25.

>>134289526
You gonna write out pyramids of numbers every time you need to show your work? It works for mental math but you need legibility and simplicity like with >>134283408 when doing any important math for which you're going to punch into a calculator anyway just to double check.

>>134283408
This is the correct method

>>134290828
If you're at a college level you don't need to show that much work for subtracting numbers dumbass. You just need to write x - y = z and that'll suffice, hell, depending on what you're doing it isn't even necessary to show that level of work.

>>134289526
I can taste numbers and use that to work it out in my head

you are fucking retarded

>>134291375
It's all about finding shortcuts that work for you.

post more retarded shit pls

>>134291500
I remember watching a documentary about a guy who saw numbers in his head as "attractive" and "ugly"

It was weird, he was like "The number 7, not a very attractive number. Ah, number 64, that is a beautiful number"

Another dude saw the numbers floating in front of him. Like if somebody gave him a math problem to solve he said they appeared in front of him and he could see his brain arranging the numbers.

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>>134291580
okay

pic related

>>134291733
I saw the same doc. I wonder if stuff like that is a result of some form of hyper autism or if it is a result of unimaginable intellect. Probably both.

>>134291741
>slovak.jpg
At this point I don't know if this is a pun, a bant or just american education at its finest

>>134292118
more like a jab

>>134291805
It's normally a form of very high functioning autism.

They used to have a series on tv called Extraordinary People (or something like that) and they had lots of people like that. They were all basically autistic but not the sperging out kind.

One guy could learn a completely new language in a week. He learned Icelandic in a week and what was even more impressive was the fact that once he learned a new language, he could then learn regional accents so he actually sounded like he was from there. That takes a very long time if you're learning a second language but he could do it in no time.

There was another guy who was flown around a city in a helicopter and then when he landed he was able to draw every single building and landmark to exact scale on a massive sheet of paper, it was insane.

>>134292164
I know who you're talking about. The guy who learned Icelandic had an IQ of 190 or something, so I'm inclined to say that's pure intellect with a sprinkling of autism. The guy with the city (I think it was that black British guy) is just pure autism. Either way it's really interesting shit.

>>134291029
Yes exactly, you would use something simpler than the count up method. You should work on that reading comprehension.

>>134282734
Makes sense, it gets the kids to understand you're working out the difference in value between the two numbers. But I can see it being intuitive for children because they don't yet understand the concept behind it.

>>134292421
At that point you wouldn't even need to use either method. You can just recognize it. Fuck you.

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>american

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>education

>>134292760
This is just flat out wrong. The teacher is a dumbass.

>>134292789
This is poorly worded and could go either way depending on how you intemperate it.

>>134282734
This is a good way to do mental arithmetic quickly, brainlet.

>>134292571
Not college educated I see. You WILL put what you did on the paper no matter what even if its the most simple form possible. Even if you are adding 1+1 you still need to do it so its complete.

t. science grad

>>134292917
How'd you interpret it in a different way?
And your teachers wonder why they are low-paid lel

>>134293035
It depends on what you're doing. Multiplying sqrt(x) with x? I don't need to write (1/2)+(2/2) to get the exponent, I can just say it's x^(3/2).

>>134292917
10 minutes for one cut 20 minutes for two cuts. Teacher is a dumbass thinking that the number of pieces is the work done.

>>134282734
We've already had this thread 77 times.
Yes, common core is crap and it's proponents need to be put in front of a wall and shot.

>>134293161
You can see it in terms of cuts made or pieces made. e.g. 1 cut = 2 pieces or you get 2 pieces off of what you're cutting. It's dumb but you could make a stretch and see it both ways.

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>>134292789
10 minutes

>>134282734
Well
That's how you train youngsters to become cashier.

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>>134282734
>>134283142
>>134283408
>>134283541
>>134283695
>>134291500
>>134292917
>>134293035
>>134284793
>>134284724

Accounting major faggot here. In my accounting textbook, the finance section takes two pages to explain the payback period in capital budgeting. Basically what it is is when a firm decides to undertake a project, the payback period is the number of years it takes to recovery the initial cost of the project.

EG: Project 1 costs 1mil, and the expected cash flow is 100 000 per year, therefore the payback period is ten years. In other words you divide the initial outlay (1mil to fund the project) by the amount of money you receive each year (100 000).

Now read the American version. Absolutely disgusting

>>134282734
God. American textbooks are so full of cancer. They gotta be flashy with colors. Lots of text boxes and shit. Whoaaa so engaging dude!

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>>134293365
MULTI-TRACK WOOD CUTTING

>>134293268
It is the way the teacher thinks and it is absolutely stupid. A kiddo is litteraly smarter than this old bitch.

>>134282734
>common core strikes again XD

this isnt common core, use google for once

>>134293422
This is a daily reminder that accountants are the most boring, dry people on earth.

>>134293268
horseshit u produce pieces by slicing increasing amnt of pieces by +1 given the 1 piece at start (0 min)

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>>134293570
:'( don't crush my dreams mane........

>>134282734
I met a schoolteacher some time ago who, upon probing, told me her school district was "beyond common core."

I asked her what that meant. She would not explain.

Finally I said that means she is not confident in her ideas and knew they would not stand up to scrutiny. She again refused to talk about it.

This is the evil we're up against. They want to corrupt our children and think they don't have to explain it, they can just do it.

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>>134293570
I thought accountants did fun things like help their crooked boss launder money and commit tax evasion.

>>134293621
If you slice a section off of a tree (which is made out of wood), do you have one piece of wood or two?

>>134293734
That's only the select few that are allowed to live interesting lives.

>>134293570
>>134293695

job yes, people no

>>134293734
They do. Haven't you seen that Mel Brooks movie "The Producers"?

>>134293734
There are more evil people, like corporate lawyers I guess

>>134293738
sure but the text says board, so yes, tree would have different times but it cant be applied here

>>134293422
Im not gonna read so much text, that looks disgusting af.

Usually massivly retarded people need lots of words to explain simple things. Fuck that shit, if there's no short explanation in 4-5rows or in a 3min youtube video the learning material is utter garbage.

>>134293621
n cuts produces n+1 pieces of wood.

>>134283408

we are doing this method too, it looks like SLAVS are masterrace in math

yes, our jews are assimilated and based

>>134293942
The point I'm trying to make is that it's a matter of perspective. Are you counting the pieces including the board or the pieces coming off of the board. It's a nebulous question at best and is flawed.

>>134293738
then it would ask gril cuts 2 pieces off a piece of wood in ten minutes how long to cut three pieces off a piece off wood but it doesn't.

>>134283408
Because you can't do "borrowing" easily in your head

>>134294059
But it's open to interpretation because it's not specific enough. It's a dumb question.

>>134294056

oh, didnt think of this, I mean u r right but thats extremly retarded especially for little kiddos

>>134283408


Are kids this retarded that they are taught the wrong way to subtract?

Bloody hell.....

>>134294212
Exactly. People in the US say teachers aren't paid enough but this shit is proof they they're paid too much.

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>>134283408
Because you can't trick white serfs into racemixing(low IQ=permanent serfdom) if they're allowed to be intelligent.

>>134284317

It's a trick question:

The chinks come in and buy the property up, including the niggers, for $1,000,000 and resell it to more chinks.

Checkmate.

>>134282734
325-30= 295
295+8 = 303

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>>134282734


>American technology.

It's over, Eurocucks.

You can only dream of these speeds.

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>>134293986
I went to my lecturer with this same question and he said American textbooks base their value on how much they write so they can charge a higher price. They put in all this unrelated bullshit to make the textbook longer so they can rip you off. Jewish trickery at it's finest.

I swear to fuck when we had to read about the risk of investing into company stocks, this is the bullshit we had to read. Why the fuck would I want to know about Starbucks, trips to Europe and motorbikes?

>>134283922
38-25 = 13
300-13 - 287

No negative numbers.

>>134282734
Common core is a way to equalise test scores by not teaching children anything

That method is a waste of time.

>>134293695
That pic
>not taking public transport
>Shitting in a bathroom is somehow bad, go away pajeet
>Not cooking your own meal
>Not working out from home with a comfy movie or something
>Not cooking your own meal again
>Having to do dishes despite eating nothing but premade crap
>Living alone on a white collar job

>>134294369
Wait. You live <50 miles to Chiraq?

>>134294369

tfw u can easily watch 4K vids with much less and I never had an issue with net speed last two years...

Why some burgers have this urge to compensate for something just like this...

>>134294607

Internet speed is more important than geographic location dude

>>134294369
lul korean is way much better

>>134294734
That close to Chicago, I'd rather have a fast car than fast internet.

>>134282734
You're probably the kind of person that thinks sounding out letters when you're a child is a bad way of learning English because you as an adult don't need to do that

>>134294607

Yes, I do.

And I own several firearms, so I'm safe.

>>134294993
Pics?

>>134287017
and zodiacs

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>>134294743

>Korea is better

For now....I could of bought the 2 Gbps speed.....which I might in the near future but this is fast enough for me.

They already have 10 Gbps speeds here in the USA.

>>134294633


If you ever use Torrents or Pirate bay, you can thank me for seeding those high speeds faggot.

>>134282734
I actually understand it fairly easily. Let's try this same concept with another number: Subtract 42 from 437.

42
+8 (circle this) Adds up to 50

50
+50 (circle this) Adds up to 100

100
+300 (circle this) Adds up to 400

400
+37 (circle this) Adds up to 437

Add up the circled numbers and you get 395.

437 - 42 = 395

>t. a Mexican and Black dude

/pol/ BTFO

It's actually a good concept to get students to subtract a way that may prove to be effective with students that struggle doing it the normal way. There is NO downside to offering alternative methods to subtraction. People that don't work in the field of education should really fuck off.

>>134284173
this
Kallenfags gtfo

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>>134295215
>>t. a Mexican and Black dude

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>>134295236
Kallen is good too but there's just something that sets C.C. above.

>>134295215
>Subtract 42 from 437
437 - 42
becomes
435-40
becomes
395

No need for fucking adding when your trying to subtract.

>>134295458
>No need for fucking adding when your trying to subtract.

437-42
437+(-2)+42+(-2)
395

Yup. No adding at all.

>>134293734
that's still the same job, you just put another layer of bullshit you have to think about

>>134295593
A. You're a idiot.
B. Are you, the idiot, honestly gonna try and tell me that >>134295215 is easier to do both on paper and in your head then >>134295458 is?

>>134295736
>be a leaf
>don't get a joke

typical leaf

>>134295812
>be a yankee
>do math poorly
>pretend you were just pretending to be an idiot

typical yankee

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>>134291375

>>134295906

oh no this leaf is retarded

>>134296038
Fuck off you fucking pepsi wannabe.

>>134282734
Lol, I went through k-12 before they started this common core, and this is actually how I taught myself to add/subtract in my head. It allows you to do it alot easier without paper. People who complain about this are literal mental midgets.

>>134295215
Developing general flexibility with numbers means embracing whatever approaches give your intuition the most difficulty. It's not as bad as memorizing time tables and doing no work, but it still boxes-in creative thinking, creates dependence ron simple shortcuts rather than intuitively understanding the bigger picture.

>>134282734
I think it's supposed to be more of a "the more you know" thingie rather than actual basics

>>134296254
Why the fuck would you teach yourself to do MORE work in your head?
Like your algebra teacher always used to say "Simplify it you blockhead" This CC shit is the opposite of simplifying.

>>134296425
It's a consequence of being familiar with how to do basic arithmetic.

>>134282734
>325-38

>32-3 = 29->5
>95-8 = 2->87

You can read it from left to right and know that the number will stay the same if the next one is not larger without doing all the bullshit the American (((way))). Seriously, what the fuck? The basic sum and subtraction and multiplication tables is literally all you need for basic math.

>>134296496
It's a consequence of being an busy idiot.

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>>134289526
What the fuck did you just fucking say about me, you little bitch? I’ll have you know I graduated top of my class in the Navy Seals, and I’ve been involved in numerous secret raids on Al-Quaeda, and I have over 300 confirmed kills. I am trained in gorilla warfare and I’m the top sniper in the entire US armed forces. You are nothing to me but just another target. I will wipe you the fuck out with precision the likes of which has never been seen before on this Earth, mark my fucking words. You think you can get away with saying that shit to me over the Internet? Think again, fucker. As we speak I am contacting my secret network of spies across the USA and your IP is being traced right now so you better prepare for the storm, maggot. The storm that wipes out the pathetic little thing you call your life. You’re fucking dead, kid. I can be anywhere, anytime, and I can kill you in over seven hundred ways, and that’s just with my bare hands. Not only am I extensively trained in unarmed combat, but I have access to the entire arsenal of the United States Marine Corps and I will use it to its full extent to wipe your miserable ass off the face of the continent, you little shit. If only you could have known what unholy retribution your little “clever” comment was about to bring down upon you, maybe you would have held your fucking tongue. But you couldn’t, you didn’t, and now you’re paying the price, you goddamn idiot. I will shit fury all over you and you will drown in it. You’re fucking dead, kiddo.

>>134296630
okay leaf. Go back to your mudslim slums and get fucked by a rapefugee

>>134296680
And you go back to your nigger projects and get fucked by a mexican.

>>134295593
Are you fucking kidding right now

>>134296775
it's a joke dumbass. It's the same thing as subtracting.

>>134296496
The method unnecessarily stretches out the length of time spent on the problem, while requiring no added mental effort. If people know how to add, you aren't challenging them on that skill.

>>134296902
Again, this is more of a shortcut.

>>134292164

The Icelandic guy saw numbers as shapes and mapped the Icelandic language onto those shapes. He demonstrated his number visualisation with silly putty and explained that answers would morphy in front of his eyes.

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>>134282734
>In order to subtract 2 numbers you need to add 5 numbers
>In order to add each of those 5 numbers you need to subtract 25 numbers
>In order to subtract those 25 numbers you need to add 125 numbers
the ride never ends

>>134296976
see>>134296280
Shortcuts enable you to avoid challenging yourself. You're just limiting your own understanding.

That's how you quantify it in your head you utter retards

>>134297140
Lol, your "understanding" of basic rote calculation? What are you talking about. There is no "understanding" needed. The goal is to get to the final answer as quickly and painlessly as possible

>>134296280
>intuition
>in reference to basic calculations such as addition and subtraction

Are we planning to make some big intuitive breakthroughs here?

>>134283408

this is how i learned and how it was taught before schools went full libcuck

hopefully trumps pick for department of education that the libshits hate so much revokes all the current bullshit and goes back to real teaching like that

>>134297158
That's how idiots do it in their heads you utter retard.

That's 5 steps when 3 work. That's painting a wall with an art brush instead of a roller or spray. It's pointless work because either you don't know any better, or you refuse to learn.

Can people really not do the classic math in their heads? I can carry numerous numbers and never had an issue losing track of them. Maybe people were just smarter 20 years ago?

>>134297294
Yeah no idea why people are saying this is hard to do in their heads. Must be trolling or some shit, no ones that fucking dumb. Probably the same NEETs that can't convert military time without some common core math bullshit.

>>134288770

You're retarded. As a teacher you should be the first to oppose that shit.

>la ce scoala predai?

>>134297198
Rote memorization cripples flexibility with numbers for the exact reason you described. Einstein was also a believer that rote memorization is garbage teaching method. A method is easy once you've familiarized yourself with it to the point of full understanding. Shortcuts (memorizing times tables) allows kids to skip doing the work, making them lazy, kinda like how you sound "less painful as possible". It won't hurt your head if you stopped avoiding it with shortcuts.

>>134297339
These methods are designed to equal the gap between whites and nonwhites. The nonwhites have trouble even reading a book, they aren't going to be shuffling numbers around in their heads.

>>134297490
Lol, we are talking about BASIC CALCULATION here. Like, adding and subtracting numbers. Holy fucking shit dude.

You realize that higher levels of math have almost nothing to do with calculation? You can get through a graduate level math or physics test counting on your fingers. Instead, they involve higher levels of logic and reasoning, rather than successively more difficult calculations

When it comes to rote calculation, your literal goal is just to generate an answer. There is no "intuition" needed here.
Memorizing times tables helps you get to the answer faster. If you really want to rip off the hood and go back to basics every single time you do a calculation, you are fucking lost

>>134282734
It's actually quite nice mathematical trick for 1-2 elementary school class. But it's just that - a trick. It's nice to know about it, but certainly not the best way to math.

>>134297521
You don't "shuffle numbers around" in your head. You just write them down in your head. Same as you would write them on paper.

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>>134283284
>>134283284
>>134283284

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>>134283408
because they want everyone to become retarded unwilling blood/organ donors, pharmaceutical test subjects, and sex slaves for the elite.
that's literally the only reason they will allow us to survive beyond the next decade. automation, AI, and self-replicating robots will cover all of their other needs.
intelligence is now a luxury only permitted for the elite. they don't want their organ donors and sex slaves to ever become smart enough to connive a way to rise up against them.
now shut up and go read the latest buzzfeed article about the best way to perform the rusty trombone.

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This parent had the correct idea... next time that school is calling for more money. Send em a check using common core.

>>134297693
You receive the self-defeating logic award of the century.
>When it comes to rote calculation, your literal goal is just to generate an answer. There is no "intuition" needed here.
That is my point, you fucking retard. You're just remembering the formula without doing the work in your head. That is why rote memorization sucks. You literally admit that all you care about is getting to the answer, and that is my exact justification behind why rote memorization cripples flexibility with numbers. You just want the get the answer without thinking, when thinking shouldn't be difficult for you if you don't rely on rote memorization as a mental midget crutch. You seriously need to count on your fucking fingers? You're the one who's lost here, buddy.

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>hong kong first grade entry test
>post answers

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There is literally nothing wrong with common core.

I don't know why people complain about it.

Its like you're surprised at how dumb these teachers are

Just remember, those who can, do. And those who cant, teach

>>134282734
Wtf now I can do large subtractions in my head by counting up.
Thanks OP.

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>>134298013
87

>>134297992
>That is my point, you fucking retard.
No I am not fucking retarded, I literally have a physics degree hanging on my wall right now.

>You're just remembering the formula without doing the work in your head.
That's what you do. You work through the proof a couple times to make sure you understand it, then you apply it through a series of formulas that are (hopefully) easy to remember.

Do you prove a^2 + b^2 = c^2 every single time you use it? Do you prove the double angle formula every single time you use it? Do you prove product rule every single time you use it? No, you have these all memorized (or written down). If you want to understand how it works, you go back and work through the proof.

>You seriously need to count on your fucking fingers?
Yes, I do. And I'm also the one in graduate school, so apparently it works pretty well.

Look, I agree with your sentiment in general. But mate, this is basic calculation. There is literally no purpose whatsoever in having some sort of great intuitive understanding of how to shuffle numbers around. We have calculators you know.

>>134291733
>>134291805
>>134292164
>>134292316
Daniel Tammet. He's not autistic, he's synesthetic. Synesthesia comes in different forms. Some people always see the number 5 as orange. Others see the number 5 as a shape. Others, like myself, see music physically in front of them as waves of colored laser-like lines which arrange in different patterns according to the relationship between all sounds present. The echoes of large warehouses and uncarpeted spaces makes my vision blurry in a very annoying fashion, but grants many positive functions as well. Nikola Tesla was almost certainly a synesthete as well.

>>134298013
87

>>134298017
Are they asking what 2x3 is in that first one?
Are they saying that 3 comes between 13 and 15?
What is the arrow, is that pointing at what they want to know?
What does where the arrow starts mean?

What's missing? What's missing is the fucking question.

>>134298267
What's the logic to it?

>>134298434
>What's missing is the fucking question.
The gas chambers.

>>134298449
your view of the parking lot is upside down
please delete your comment, then i'll delete mine

if you cant do it just 325 - 40 + 2 ?

Why add all that other shit

>>134298543
clever

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>>134298449
logic to the hk test or to his certificate?
If you're asking about the test, fuck you.
but here anyway

It's not a math test.

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>>134298449

I expected this from a burger not you.

>>134298276
>physics degree hanging on wall
HAHAHAHA
>y-you can't possibly seek to understand formulas before applying them
I literally learned the quadratic formula by solving for X. That is how the quadratic formula was created. Learn your history in mathematics, it shouldn't be a big step for you. I know how logarithms were created (napier/burgi), and it helps me understand how they function as I use them.
>I DO count on my fingers!
so do children with less mature calculation skills. its the teachers goal to bridge the gap from kids counting on fingers to making complex calculations.

You are a lazy, unintentional comedian.

>>134282734
>>134283024
Leftists wanted "equality" in the grades of white kids versus non-white kids so they created this shit to tear down the grades of white kids.

>>134298598
I'm also hammered. Cut me a little slack.

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>>134298276
>>134298612
See this? This is what the majority of people don't know when they use the quadratic formula. This is what they're taking for granted.

I did 38 - 25 = 13 then 300 - 13 = 287

>>134283284
That's not it. Niggers cant do math in their head so they created a long and protracted method of doing mental math work that most whites and Asians can do by age 5. They have to literally group numbers and round and shit. All crap a non-retard could do on their hands or in their head. This MAY help blacks but probably hurts whites and Asians.

>>134282734
>>134282734
They're trying new ways to get kids to understand math in a different way because for the last 20 years, Americans have absolutely fucking failed in college level classes.

Maybe the average person here passed high school algebra and that's fine, but the problem comes when it's time to do calculus 1, calc 2, statistics or even college level algebra.
It's well known that most college students fail these courses and then they have to take non-credit awarding classes until they get caught up, which is embarrassing.
So since teaching math the old way didn;t work out, they're trying new things.

>>134298961

Whites and Asians did fine with math the old way. It wasn't until loud obnoxious niggers and spics were introduced that suddenly all these problems began. This is nothing but teaching to the lowest common denominator.

>>134292316
>>134292164
>>134297028
Daniel Tammet
https://www.youtube.com/watch?v=AbASOcqc1Ss

>>134299265
That guy was a freak. He had a freak seizure as a child that caused brain abnormalities that crossed different centers of his brain.

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>>134288770
>understand subtraction better

>>134293422
>my country followa US like a slave
>had to suffer textbooks like this
>literally learned more from youtube than books
>teacher got pissed i don't buy retarded as books

>>134299640
I'm confused why anyone thinks they can still learn more from MUH BOOKS and MUH SCHOOLS than from the fucking internet

>>134288770
So basically what you are saying is that those tests were "simplified" for the sake of dumb fucks like blacks and rest of them...

>>134301118
As I said in another post here I found those types of methods books about

>>134282734
They want it so parents can't help their kids with homework anymore. If I had a child and they asked for help with something like this, I would see this, say wtf is that just do it this way. They would get the right answer, but show the "wrong" work, making the teacher take points off.

It teaches your kids, that you as their parent are antiquated and not to be trusted in giving useful information, even if it appears to be useful and true.

>>134282734
I concur, this is stupid. Sorry, gypsy teacher.

It’s basically like saying: you have to subtract 451 from 835, so you first forget about 35, and “count up” to 800. Also, you forget about 500-451 and “count up” from 500 to 800, which is 300, s-s-simple! Then you add everything you neglected so far (i.e. 35 and 49).

This is not wrong, but it’s just common sense. It’s like dedicating a page to dividing by 5 (“first, divide by 10, i.e. move the decimal point by one position to the left, then multiply by 2!”)

t. did maths olympics in school

I mean, the method itself is not stupid. It’s how we do subtraction in our head, I believe. But it seems to be a waste of time. Kids would benefit more from doing the page worth of subtraction examples than from reading this mental chewing gum.

>>134295107
Da fuq I only have 1 mbps despite living in a town this is bull

>>134298747
>majority of people don’t know when they are using quadratic formula

bullshit. it’s explained when the formula is introduced for the first time.

>>134294369
That’s pretty unique in terms of availability of such speeds and that you can afford it in burgerstan. Everyone knows america sucks on average for internet speeds. Speaking of “eurocucks”, I think Slovenia or Slovakia had the best average speeds a few years back.

>>134294391
>paid per page

That explains it. You get basically get maths and science textbooks written by Alexandre Dumas and a team of his literary negroes.

>>134292760
I see your point since
>Marty ate more pizza
is a statement/given not an assumption.
The assumptions are :
1.pizzas are the same size
2.pizzas are different

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>>134282734
What the fuck is this

>>134297488
I do oppose, in the sense that I wouldn't use it myself as a calculation method for current use but as a way to see subtraction in a different way and understanding quantification of numbers.(if I had the time ofc)
Me I saw it before in a book about fun in mathematics which wasn't particularly in the curriculum still it was quite an eyebrow raiser.

>>134298267
>135
Suck it!

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>>134282734
Isn't this literally designed to make everyone equally dumb?

>>134283416
thats how i do them in my head

>>134296640
Make up your fucking mind. Are you in the Navy or the Marines? Regardless, you sound like a first class usda prime choice douche. A true soldier does not brag. Piss of you wannabe gi Joe. Hopefully we'll C U Next Tuesday!

>>134306950
NEWFAG
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A
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