>>693948215
it's right

there's too much ambiguity in the writing of the problem
thats why you cant write division with a slash

basically what she means about chsnging from the old way to common core is just how theyve chisen to intrpet ambiquity has changed

It's 16 anon, use PEMDAS

>>693948215
We are all going to die eventually

>>693948853
What the fuck is PEMDAS? Its BIDMAS

>>693948215
Depends on what you mean by /

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>>693949217
BIDMAS??

It's LIVMAS

Do the brackets first, simplifies to:
20 / 5(4) or
20 / 5 * 4
Division comes before multiplication:
4 * 4
16

>>693948215
There is invisible () around the denominator

>>693948215
You cant trust a teacher who can't even focus the projection to match the square.

>>693949331
Riibomasu

>>693948215
They're going to anyway

>>693949353
Thread

>>693948215
wat?

>>693948215
Math is fucked.
Children are fucked.
I'l like to fuck that teacher.
And the correct answer is 1.

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>>693949331

Is this really that difficult?

PEMDAS starts with Parenthesis. So, start by making
5(2*2) = 5(4) = 20
Then
20/20 = 1

I'm not sure what fucked up way they are teaching kids now, but the answer will always be 1.

>>693948215
In math there are no multiple correct answers except in matrices. Common core puts butt hurt prevention above education and is the definition of degeracy.

>>693949619
In the UK we use BIDMAS (brackets/parentheses same thing)
We do division before multiplication

This seems to depend on where you come from...

>>693948599
20/5 = 4
4 * (2*2) = 4*4 = 16
20/5 * (2*2) = 16
You degenerate imbecile.

If we did logic your way life would be so bad civilians would be allowed to have guns no matter how stupid they are. (Like Ame-)

"He killed her" according to you can mean both: "he killed her" AND "her killed him".
Calculate in order. Holy fuck.

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>>693948215

Potato!

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>>693949600
Exactly this is now a Taco Bell thread

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>>693949638

>>693949619
Uhhhh do you math bro

>>693949740
what the fuck operator begins with 'I' ?

>>693949870
Indices

>>693949870
You know, the little number at the top right

>>693949759
>autism the post

>>693948215
Common core another way that sjws are destroying the future by making everyone exist at bigger level

The answer for the 'old' way is 16. The answer is not 1.

PEMDAS is divided into segments of priority.

It goes P->E->MD->AS

First you do anything in parentheses, then do exponents, then do multiplication AND division, and last addition AND subtraction.

The 'MD' and 'AS' are to be done statically, not in order. This is where people fuck up thinking that they need to do all multiplication first, then division. No, it's at the same time, so basically you just do it in order of how the problem is written.

>>693948215
Syntax error or 1

>>693948215
Two ways for poorly written problem
20/(5(2*2))=1
(20/5)*(2*2)=16

>>693948215
K

Do as a pc would and get 16.

Its ambiguous and not even common core (whatever that is)

>>693948215

It'seems 16 either way what the fuck?

No one thinks they need to do multiplication first in the UK its the other way...

Wut

>>693948215
I'm not sure on this topic

It's certainly an interesting theory, Steve.

Ok everyone lets move onto integration

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>>693949968
>greentexting buzzwords wins any argument
DEGENERATE
E
G
E
N
E
R
A
T
E

>>693949353
division and multiplication are given equal precedence. it's left-to-right after everything else is gone

>>693949377
that's why you write it as a big fraction and always express division as inverse multiplication

>>693949740
division and multiplication have equal precedence

>>693950373
Amerifat pls stop.

hj

>>693948215
fi you go from left to right while doing order of operations youll get 16

if you treat it as 20 is the numerator and 5(2*2) is the denominator it will be 1

>>693949991
>>693949991
preach

s u c c

>>693948215
20 / 5*(2x2)
20 / 5 * 4
20 / 20
1

what the fuck s this common core. it's MATH there's only once answer. Are they really trying to teach kids variable sciences that early on? They are like at age 6 tops!

>>693948215
The projection isn't completely shown on the board. That really triggers my OCD.

>>693948215
llllll

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>>693948215

>>693950130
PEMDAS. It's written a shitty way, but 20 / 5 (2*2) is 20 / 5 (4) is 20/20 = 1. PEMDAS is Parentheses, Exponents, Mulitplication and Division, and Addition and Subraction.

>>693950625
you added an * where there wasn't one

>>693948215
Try doing this equation with physical objects and tell me what the answer is.

>>693950663
order of operations
P, E, M/D, A/S

>>693950747
I was taught BODMAS. B for brackets and O for orders.

>>693949600
Taco kek

>>693950747
mah nigga

>>693950808
Common core will allow you to draw little circles until you find the answer. The answer you find will always be correct as long as you feel it's correct.

>>693948853
P -> parentheses
20/5(4)
M -> multiply
20/20

what are you some stupid nigger? It's one.

>>693950625
PYTHON!!!!

>>693948215
>both answers are equally correct
No. No they're not.

The problem with idiots nowadays is that they don't realize that a fraction line in a regular text line only applies to the term directly after it.

This
>5 / 3 * 4
is the same as
>(5 / 3) * 4

If you want to write this
>5
>______
>3 * 4

You HAVE to put parantheses like this
>5 / ( 3 * 4)

That's all it boils down to. There's only one correct answer and it's 16.
>(20 / 5) * (2 * 2) = 16

If you want to get 1, the problem would have to be stated like this
> 20
>________
>5 ( 2 * 2)

Anything else is incorrect. Also common core does NOT have an influence on this WHATSOEVER.

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>>693951016

>>693950960
As long as everyone feels good about it! Oh, and as long as you aren't white or successful

>>693950747
Multiplication and division have the same precedence, you elaborate them in order from left to right. 20/5*4 -> 4*4 -> 16

>>693948215
Fuck you

>>693948215
Only retards think that 1 is the right answer at all.

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>>693950288
I so wish i was here to post this under that

It's 16.

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>>693948215
it's wrong because you're a faggot op go fucking kill yourself

>>693949941
You mean exponents?

>>693951328
Negative. PEMDAS.

>>693950118
Do as a PC would and get turned off.

>>693951223
This is the only right answer

Bullshit

>>693948215
I don't see how it's 16 but whatever

>>693950380
That's what he's saying you fucking retard. The division comes first in the expression.

>>693951431
Exponents, indices, orders, they have different names.

>>693951431 (yes I'm still here)
No, I meant indices because I live in the UK

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>>693949759
Holy fuck dude ...

>>693950797
you're incredibly stupid.

I don't understand common core

>>693950611
and if you have to decide which way to do it the problem was written by a normie.

>>693948215
In my Australian High School we used BOMDAS (brackets, orders, ect). I'm actually surprised at how many different ways people have of sequencing their order of operations.

>>693950747
>It's written a shitty way
True. You should always use correct syntax, but if you HAVE to use regular inline text, then a division always only applies to the term after it, if there are no parantheses telling otherwise, so you're wrong with it meaning 20/20.

>>693949353
good job anon

>>693951462
If you use PEMDAS you get 16, time to retake your algebra class dumbass

>>693949759
Dat PEMDAS tho

>>693950797
In python, putting something in brackets after something like that means it tries to call it as a function which it obviously can't do as 5 is an integer

>>693948215
That's nonsense

>>693951564
because you're a nigger who dropped out of school

>>693951328
this
Get your shit together /b/ and stupid teachers.

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>>693948215

use PEMDAS, or suck my dick.

>>693950747
Finally someone explains to OP.

>>693949619
>>693949740
Multiplication and division are done in the same step because they are the same operation. Likewise with addition/subtraction.

a * b / c is the same as a * b * (1/c), so doing either first doesn't matter. Ambiguous equations like this are intentionally designed to cause confusion because they leave out parenthesis. In its current form, it's not ambiguous, people just choose to look at it differently and favor one operation over another, or insert additional rules.

a / b * (c + c) is not the same equation as
a / (b * (c + c))

It's pedantic to a point, but specificity is very important in math.

>>693951577
I already knew that you had a limited worldview. I was holding up the mirror.

>>693950797
ab = a*b

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>>693949815

>>693948215
how the fuck do you get 1 and why is it implyed that math changes over the time?
american education at its finest

>>693951844
Parentheses is just a word made up by the Americans because they think it makes them look more intelligent than those using brackets. It doesn't.

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>>693950663
yes, 2x2 is 4, but the tehre are not other brackets, so fuck off and do operations in order
20 / 5 x 4 = 16

this is not you average stupid, this is advance stupid

congrats, hope your future job at taco bell will not require math

>>693951989


"Parentheses "

Origin:

mid 16th century: via late Latin from Greek, from parentithenai; ‘put in beside.'

was not made up by americans.

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>>693951101
thanks anon, here's a cat as a reward

>>693948215
It's 16..
BODMAS

Plus any computer calc would end up with 16. They can't both be right... or it would cause major issues in all sorts of fields.

Since computers are so widely used, they are the standard. Default windows calc gets 16. So it's 16.

That's not common core. Common core does not redefine PEMDAS. It does not promote wacky ways to solve problems. They are standards, which is something all school systems had previously, except now they are nationalized for consistency and clarity. They simply outline what a child should know for each particular grade level, nothing more. The vast majority of criticism comes from ignorant people who don't know anything about CC other than false memes like this and are likely just following the herd.

source: I'm a fucking teacher.

>>693948215
fun fact: both answers are equally WRONG.
The only correct answer is "4 4", because there is no multipication sign between 5 and (, and there you can only assume a it before a parenthesis if there are none written in all the operation.

>>693951717
>offers no evidence of following PEMDAS and arriving at 16

Dumbass

>>693948215
BIDMAs

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>>693948215
This whole thread can die in a fire. This image represents this thread.

>>693949535
/thread

>>693952394
a(b) = ab = a * b

>>693952389
This, but it still resulted in some pretty whacky teaching methods, because there's a lot of teachers not getting their shit together.

>>693949759
Division is multiplication, neither takes precidence. You work from left to right.

both are ambiguous as fuck fuck mathematics we have calculaters and asians for that shit now

>>693951932

yeah, but a*b != b*a.

i am not against the pic either. common core is fine. five times three is NOT 5 + 5 + 5. it's 3 + 3 + 3 + 3 + 3. multiplication is NOT always commutative. 2 + 2 != 4. 2 is defined as 1 + 1. 4 is defined as 1 + 1 + 1 + 1. therefore, 2 + 2 equals 4. you have to be that deliberate and exact.

there is a "classic" question asked at IT interviews; "you have 20 steps to walk up. you can take 1, 2 or 3 steps each time. how many DIFFERENT ways can you walk up the stairs?". you could spend hours writing out all possible permutations and fill notebooks but they want an answer in 3 minutes. this is discrete math and it's what common core actually prepares you for.

this pic is stunning but it's also a reminder that "both" are "equally correct" in SOME CONTEXT. teaching children that order of operations can DIFFER based on CONTEXT is a major synapse builder in growing minds.

ever do LSD?

https://www.youtube.com/watch?v=PKH22QOhc7I

>>693948215
1 becuz u need to follow the order of operations

>>693952553
Where did you get a picture of my girlfriend?

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>>693952394

a number next to parenthesis means multiplication.

>>693948215
ok

>>693948215
This image proves that Americans are literally retarded and they are taught to become retards in school.

>>693952553

People like that should be executed by being tossed out of a plane. We'd all love to see the aftermath.

>>693948215
Bullshit ass faggots

>>693949353
/thread

>>693949740
The 5(4) still counts as parentheses in America but it's confusing as fuck, I say we trash the whole math thing and have a big orgy

>>693948215
Hello goodbye

bruh

this is so gay.

>>693952714
a * b most certainly equals b * a.

3 sets of 4 items totals the same amount as 4 sets of 3.

Unless you have some specific edge case, ab will always be ba

>>693952944
Let's do it. Im the creepy dude with a foot and scat fetish

>>693948853
Haha you use your own method and still manage to fuck it up

There is no old way or new way. The question is fucking retarded and there needs to one more set of parenthesis.

>>693951328
I thought 1 was the answer but because I'm not a fat cuck I was proven wrong
20/5(2*2)
20/5(4) = 20/5*4
------------------------->
4(4) = 4*4
16

>>693952714
a * b literally equals b * a.

Also 3 * 5 is both 5 + 5 + 5 AND 3 + 3 + 3 + 3 + 3.

Order of operation, as in the priority of mathematical operations, does NOT change with context. That doesn't mean that you can't do this:
>3 * 5 * 10 = 15 * 10 = 150
>3 * 5 * 10 = 3 * 50 = 150
But the "order of operations", as in the priority of operations is the same in both ways.

Hope you're kidding, there's so much wrong with your post.

>>693948215
16 nigga

PEMDAS

The answer is 1 when you use PEMDAS. Some of you fucks are even using PEMDAS wrong. Fuck common core, it's the unraveling of everything we know.

>>693953387
Forgot to do multiplication and division from right to left nigger
5(4) = 5*4

https://www.google.com/webhp?sourceid=chrome-instant&rlz=1C1ASUM_enUS508US508&ion=1&espv=2&ie=UTF-8#q=20%2F5(2*2)

Is everyone ignoring the age of the children in the photo?

its 16, 20 / 5 * 4.

>>693953503
Thats even worse

To be honest, it really would need to be properly shown in order to give only one or the other answer.

If the question was shown like:
(20/5) * (2 * 2)/1 Then it will indefinitely be 4*4=16
However, if it were to be shown like 20/5*(2 * 2) then it would be automatically assumed that the 5 is multiplying the bracket, giving the answer of 20/20 = 1.

The only reason that there even are "possible answers" is because of how vaguely it is shown so the best way of going through the question is by questioning the details to see if the question requires certain details.

Finally, if you use the calculator and put the exact way it is phrased, it gives you 1.

>>693953330
Trips of truth

>>693948215
how can they both be "equally correct"

>>693953261
Yes this person should be fired immediately and never allowed to teach children again in her life.

>>693953662
No it doesn't, you get 16

>>693952569
so you can't read...

>>693952675

I'd put more blame for wacky teaching methods on the way new teachers are being taught in college. Learning things "the hard way" like most of us probably did - as in sitting down and just fucking learning the shit - has fallen out of favor. Teachers now use all kinds of new age touchy feely teaching strategies. Kids keep "math journals" where they can talk about their feelings and shit.

>>693953747
Do you use a calculator?

>>693953718
They can't. It's some dumb woman who thinks she can do whatever she wants with children because it's a woman's privilege so she has decided on her own to educate them about shit she doesn't herself have a clue about.

>>693953718
Come on now, both those who think its 1 and those who think 16 are entitled to their opinions. She went about this the best way possible to not hurt anyone's feelings.

>>693953819
Do you know how to use a calculator correctly?

>>693953819
Naturally, try getting through A-level further maths without one

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>>693953858

>>693948853
using PEMDAS the answer is 1 you fucking retard. You always do whatever you have to in order to get rid of the parentheses first.

>>693953900
Yeah, I typed exactly how it was on the image.
20/5(2*2)

>>693953662
I put it in my ti-83 and it gives me 16, because it does PEMDAS correctly.

>>693952761
if there is no other multipication sign, it's assumed. If there is one (and there is one), then you can't assume one.

>>693949353
Why are you removing the brackets around the 4? They are still there. You need to multiply 5x4 first before you can divide because the 4 is inside the parentheses. You can't just arbitrarily remove them to fit your twisted mathematical methods.

No one going to point out that the old way gets you 16 not 1 if you think the answer is 1 you're uneducated. Left to right after parentheses

>>693954022
So the answer is assumed? This is why the question is too vague.

Ummmm no

20/5 * (2 * 2)

20/5 = 4

4(2 * 2)

distribute the 4

8 * 8

the answer is 68 you fucking morons

>>693954022

>achtually.jgp

>>693954109
You do the sum INSIDE them first. Then you do whats around them in the correct order

>>693950739
thank mr cat
>>693948215
thank mr cat
Cancer.

>>693948215
Man my OCD is screaming at how badly that picture is on the piss. STRAIGHTEN THE DAMN PROJECTOR UP!

Google says 16

>>693954109
5 * 4 and
5(4) are the same thing you idiot stop trying to act smart because you got the answer wrong

>>693953970
No, using PEMDAS it's 16.
20 / 5 (2*2)
Do parentheses first
20 / 5 * 4
Multiplication and divison occur at the same time, so you must work from left to right, doing 20 / 5 first.
4 * 4
= 16

>>693954169
8*8 is 64 you twat

>>693953812
Yeah, I see that myself. Currently an engineering student and I see other professions are really fucking up in universities all over. Knowing your shit has become secondary, that's pretty scary.

I still blame the teachers, though, in the end they're responsible for their actions and have a mind of their own.

>>693954169
Kek

>>693954117
you stupid nigger. Once you do the internal operation in the parentheses, you still have a (4). Because the 4 is offset by a parentheses, you have to do the multiplication operation first to get rid of it. Thus you have 20/5(4) = 20/20 = 1

thats how the old PEMDAS method works, retard.

>>693954277
But that's because it assumes the change of the question.
It changes to:
(20/5)*(2*2)
It added a nonexistent bracket

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what kind of fucking caveman schools did you retards go to? Stop overcomplicating the shit. Just go left to right and get the fucking answer, or right to left if you are left handed.

>>693954356
No, it's 68, you fucker.

>>693954426
Once you do the operation in the parentheses, you can simply get rid of the parentheses as they mean nothing with a single term in them

They will dir anyway, the question is when

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k

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>>693954482
>or right to left if you are left handed

It's 1. Brackets come first.
So 20/20=1

All you other retards who get 16 do this
(20/5)*(2*2) = 4*4 =16
Why add brackets where there aren't?

>>693954335
why are you removing the parentheses around the 4? You dont do that. The parentheses chills around the 4 until you multiply it by 5. After the parentheses is gone, you are free to work on EMDAS. There are no exponents so the next step is multiplication, none of that so the next step is division. Now you divide 20/20 and you get 1.

>>693954525
Of course adding in a x

>>693954426
You're too fucking stupid to even try to talk to no point go swallow some #BlackPride and some #BlackLivesMatter

>>693953970
>>693954151
>>693954438
Back to Facebook, dumb cunts. Math is men's business. Just be pretty and keep your fucking mouth shut.

>>693948215
Cuck

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>>693948215
>two answers to one math problem
>both correct
?????

>>693954426
Um no, actually it works like this --> P, E, M/D (whichever is first from left to right), A/S (whichever is first from left to right)

>>693948215
It's fucking 16

>>693954709
Assumptious cunt.

>>693954426
"getting rid of parentheses" only means simplifying the values INSIDE of it. Once you've done (2*2) = 4, you've ALREADY GOTTEN RID OF THE PARENTHESES. 5(4) means the exact same thing as 5*4. With 20/5(4), you have the M and D parts of PEMDAS in question. Since M and D are ranked equally, you just work from left to right. 20/5 = 4. 4*4 = 16

>>693954709
True. Literally everyone ive ever met thats really good at maths has been male, including all but one maths teacher at my school

>>693953463
NO
Numbers adjacent to parentheses are considered before mult/div.

2*2=4
5(4)=20
20/20=1

You're a shit. Don't misinform.

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>both answers are equally correct
>equally correct
>equally correct

also, a mathematical expression only has one result

>>693954774
If you are a man and you are confused about 2nd grade math, I'm sorry but you are an utter failure and can simply kill yourself right now. Women at least have the advantage of getting by in life thanks to their looks. You have nothing.

>>693954665
>doesnt provide a counter argument
Okay buddy. Whatever helps you sleep at night.
>>693954709
kek somebody sounds upset about being proven wrong
>>693954772
okay. That being said, the answer is still 1.

>>693949353
Being this retarded

>>693954899
No, they're not. Only numbers inside parentheses are considered before. Numbers adjacent to parentheses ARE multiplication, so how could they be considered before multplication? Consult a calculator. It gives you 16.

Don't misinform

I prefer the new

>>693954828
while I see what you are saying, I still think that you are wrong about the parentheses. It is still there until combined with an external operation.
>>693954899
this is the only correct way to do it

>>693948215
20/5(2*2)=4*(2*2)=4*4=16