Well Yea Forums?

answer is 1

pemdas

parenthesis first then multiplication THEN divison

this is the CONVENTIONAL way.

conventional means what is "GENERALLY BELIEVED" which makes it the STANDARD that most people ACCEPT as the STANDARD

but it's just a convetion, this means if PEMDAS wasn't the standard one it could be "MDASPE" instead. It doesn't follow any logical reasoning as to why it's P>E>M>D>A>S, it's just universally accepted

FUCK YOU if you think otherwise and SUCK MY DICK

parentheses, exponents, multiplication, devision, addition, subtraction. it's called the order of operations

it was dumb enough the person felt they had to take a picture so what do you think?

Depends on the district and such. I went to a DoD school and we never dealt with common core

It can't be real right?

Division is equal in priority to multiplication
What do you do when you have two functions in a calculation that are equal in priority?
For example 6+3-5 and 20÷5×4
Do you do it backwards for some retarded reason?

You're wrong. Its right to left and mult/div are on the same level dip shit

YES CAUSE PEMDAS

YOU FUCKING RETARD NIGGER

I was taught that Multiplication and Division have equal priority and you do them left to right, same as Addition and Subtraction

this

pemdas is more like p -> e -> (md) -> (as)

it's actually more like PE(MD)(AS)
Multiplication and Division are the same thing just inverted, so giving Multiplication magical priority over Division because of muh mnemonics is pretty retarded

Do they teach you to use ÷ like that in mathematical expressions in schools now?

Yep. Called it

PEMDAS isn't a thing. It's just something American high school kids learn.

I just tested 5 different calculators and sites like google, wolfram alpha and symbolab and the answers conclude that you're lacking vital brain function.

Do they really teach this in America?

It's 16.. unless you're a retard and don't understand basic math.

It's correct

You're dumb as hell bro

It literally makes no difference
I wasn't told to use either exclusively and I don't use either exclusively

In America, in common core, right?

Did in the 90s when I was in school. And all through my chemistry degree at college.

As a single line of text, this would correctly be considered to be 16. As a fraction it would be 1. If a student wrote such an ambiguous expression they'd correctly be failed for it.

We learn it in europe too. It's correct, the other way is wrong and leads to problems

>schools: sometimes standard teaching methods don't work and we need the resources to help our teachers teach using different methods depending on the child's learning ability
>Zimba: What if got a bunch of people with the same lifestyle, background, and lack of teaching experience to use a computer simulation of what we believe the average American child is like to create an unmodifiable blanket system for teachers to use
>schools: we'll give it a shot but if it doesn't work can we tweak it?
>Zimba: no

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Because you didn't type it into your calculator correctly

Let me guess...You didn't use brackets...

This. An equation intentionally written stupidly to prove a nonexistent point is ridiculous. Something that ambiguous should never occur.

Fucking yikes. We were not.
Yes when they started requiring us to bring calculators we were shown how to force proper order of operations. I just don't remember seeing anyone represent a mathematical expression like 20÷5x4. We'd be asked to rewrite it.

It's a thing, but people with room-temperature IQs take it too literally without understanding the concepts behind it.

For instance.

pemdas is for retards who dont understand parentheses

the correct way is to write 20÷(5×4) if you want me to do the multiplication first.

2x2=4
20/5=4
4x4=16

20/5*(2*2) = 20/5*4
now everything has the same priority so we go from the left to the right
=4*4=16
GG
shove your dumb mnemonics up your asses tyvm

naw I was taught that way before common core, if you look it up pretty much anywhere or on any calculating website it'll be P E (MD) (AS)
4 ÷ 5 is the same thing as 4 x .2 so making multiplication strictly higher than division doesn't make sense because the signs can be replaced if the numbers are inverted
the "common core" way in OP is consistent if you do these sign/number inversions and the "old way" is not
since the operations are equivalent both ways, the method that keeps the answer consistent is objectively the correct way to do it, regardless of how you were taught it growing up

american schools are fucking trash, morons
multiplication and division have the same priority. Solve from left to right.
Addition and subtraction also have the same priority, but are lower than mult/division

also, ffs, using a slash(/) instead of the stupid fucking division symbol is fucking normal
you don't have ÷ on your fucking keyboard

Out of curiosity, what grade level did they start requiring you to bring a calculator?

We weren't *permitted* calculators until 9th grade algebra

If u do parenthesis first you get 20 / 5 × 4
Then u just calc left to right.
U get 16

When the UCSMP books came out, whatever year that was. I only did it for a year and I graduated and majored in English.

>legitimately has a degree in mathematics

without controversy, it is first correctly interpreted as

20/5(2*2)
=20/5(4) which then is evaluated left to right
4(4)=16

The other way people SAY is ambiguous but isnt is to treat it as a fraction, but in computer science and general logic it would need to be written as such to be a fraction (which it is un-ambiguously not)
20/[5(2*2)]
=20/[5(4)]
=20/20=1
notice how it does this because the denominator is treater as a greater parenthesis around the entire right half of the expression

so this common core is just doing things from left to right? Seems pretty good for kids

no, read the thread dummy, they only put the word common core in the image to trigger boomers like you that learned it wrong in the first place

>Fully licensed math teacher, but in a non-common core state in the US

This explanation is 100% correct

And that's 1

You really don't understand PEMDAS, do you. Holy shit Americans are fucking retarded.

Multiplication before division

American here and I know how wrong he is, please don't think we're all retarded just because a few of us are

lmao good one

bump

You never learned this? I learned this in grade school

It scares me that these retards are permitted to vote.

They're fucking equal. multiplication and division are equal and you solve that left from right.
Same thing with + and -

They are direct opposites and do the same thing so it makes no sense in the first place to prioritize one over the other.

?? I don't know what apple juice you got at lunch time but I have a feeling your teachers pissed in it every day before handing it out to you. Would explain why you seem like such a piss baby

Multiplication and Division are the same thing with inverted numbers you goon, putting one before the other simply because of some mnemonic is dumb

He is right tho

Anybody who answers 1 is retarded. It could be 20÷5x4 and it wouldn't be any more ambiguous. PEMDAS and BEDMAS are both right.

Attached: Screenshot_20190617-075854_Calculator.jpg (1080x2220, 193K)

no faggot, the P means you do what's inside the parentheses first, not everything related to the parentheses

Its 16. Multiplication doesn't come before division, multiplication and division are the same i.e. you do what ever comes first (left to right). If you plug it into any calculator you will get 16 not 1, because unlike a lot of people in this thread, a calculator is not retarded

No he's not. Multiplication does not have any sort of priority over division, since they are the same operation. Same with addition and subtraction.

There's no difference between 20/5 and 20*(1/5)

The parens make the multiplication go first, idiot.

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You could also Galaxy brain it by going 20/(5(2x2)) and distributing the 5 to the 2’s to get 100 and dividing 20 by 100.

Then idk wtf the answer is. Some decimal.

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...

The way education is going soon purple will be a valid answer as well

Different operation asshat.

That's what you morons THINK was intended, but it's not. If that was the actual intent they'd need a second set of parenthesis to indicate this, or to make it spacially obvious the way you did. As it is written in the OP, 16 is the correct answer.

>Something that ambiguous should never occur.
It's not that such ambiguity constitutes an illegal expression. We just avoid it because we generally want to communicate about numbers, not be cheeky cunts.

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No it's the thing in the OP

That's completely wrong you can't write it like that. It changes the whole equation. the equation as presented is 20/5 * (2*2). You don't divide 20 by the (2*2). Learn basic math fuck head.

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Teacher here.

I fucking think common core is autistic and making our kids worse at math.

en.m.wikipedia.org/wiki/Order_of_operations

1 is correct

when you put it like that it changes everything, both numerator and denominator have parentheses that are "invisible" and implied

What you said isn't possible, because of the brackets

Operation in OP is this one.

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You are actually disabled. 1 is not correct. Type the equation as written in the OP into a an Algebraic calc. and you get 16

.... The 2*2 is 4. 5*4 is 20. 20÷20 is 1. Wtf did you think I do? Idiot.

Wtf do you mean it isn't possible? You solve it like this: (2*2) = 4, 20/5 = 4 then 4*4 = 16

/5(2*2)
not enough context given to give a solid answer.
also probably wasnt given to the students, so awful teacher.

The answer is 1/5
Don't dispute this, just accept

What.

>20/5(2*2)
not enough context given to give a solid answer.
also probably wasnt given to the students, so awful teacher.

No, they don't. In the US, the answer is now and has almost always been 16. There was a time when a specific printer of text books used a wonky notation that could lead to getting an answer of 1, but that was around the turn of the century - 20th, not 21st - so it was only like that for a brief time over 100 years ago. In any modern book, the answer is 16.

... Just solve it for x.

Attached: 4ecef4cd2f1eaa306b6ae7500fda55474ad14589bf3b37b1f02401ef7e7075bd.jpg (533x700, 84K)

where is x?

See:

Fucking hope so, thanks for the real answer.

so when faced with multiplication/division on the same line, it's read left to right then.
/thread

Correct way:
20/5 (2*2) = 4 (4) = 16
Also correct but NOT what the picture displays.
20/(5 (2*2)) = 20/20 = 1

That's retarded. The / symbol doesnt magically group everything after it together. Thats what parenthesis are for. An operator symbol acts on the following items UNTIL another operator is found.

So 20 / 5 * 4 evaluates the 20 / 5 first. You'd need a grouping mechanism to get 4*5 evaluated first. Unless you're a moron.

Jesus fucking christ i never thought i’d see an arguement over something so trivial...
For the record it IS 16

0.2 or 1/5 in your eaxmple

There are no explicit brackets in Ops statement. Adding in brackets changes the equation output from 16 to 1. Only faggots imply brackets.

No, 30 years ago before common core was a glimmer in anyhone's eye. You're just a retard who didn't pay attention in class. M/D and A/S have to me the same priority because they are exactly the same thing as one another. You can't give dividing by 2 a different priority from multiplying by 1/2, because they are interchangeable. You can swap one out for the other, so giving them different priorities makes no fucking sense.

It depends on what you mean by "as a praftion". As a fraction where you placed the entire second half under the line, sure. But that would be incorrect.

20
--- (2 * 2)
5

There it is written properly as a fraction, and the answer is still 16.

This

Rene Descartes. Nuff said

No, Brackets first, then Multiplication, then division.

>PEMDAS
of course its 1, but not because of your fucking PEMDAS you retarded cretins
your lack of abstract reasoning has led you to create this useless memorisation of mechanical mathematical methodics, which in turn led to not understanding the basic concepts of mathematics and furthering your inadequacy making your offsprings that much dumber
good job

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Setting up equations to solve like this is an exercise in futility. teaching order of operations without algebra is just meaningless busywork.

this guy gets it

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I don't get it

this argument is retarded. the problem is notation.
pemdas says you do the bit in parentheses first, so it becomes

20 / 5 * 4

division and multiplication have equal priority. the convention is to do it left to right, but really there should be parentheses in the question to clarify what you're supposed to do. if it was written by hand the notation would be either

20
----
5*4

or

20
--- * 4
5

which leaves no room for ambiguity

Explain your reasoning

They make the @*2 multiplication go first (even though it doesn't matter). But the parenthesis have no effect on the 5*4 multiplication, BECAUSE THEY AREN'T IN PARENTHESIS.

Multiplication before division. Problem solved

multiplication and division is literally the same thing. and you do it at the same time.

this. people remember pemdas but not algebra

en.m.wikipedia.org/wiki/Order_of_operations

WikIpEdIa

learn to walk before you type, retard

en.wikipedia.org/wiki/Order_of_operations
PEMDAS puts multiplication/division ahead of addition/subtraction, but that's it. you are welcome to do it that way if you want, but generally by convention people will work left to right when dealing with operations on the same tier.
type the problem into your javascript console, it will give you 16.

see

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also python, and any language for that matter

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I learned PEMDAS and got 16 just cause that's how it makes sense
This 20/5(2*2)
Isn't this 20/(5(2*2))

Your wikipedia link shows that multiplication shall be done before division

no it doesn't

20x1=20
5x4=20
20/20=1

You are assuming that / is just shorthand for the horizontal line used in a fraction. It isn't. / is its own mathematical symbol meaning "divide".

The MD & AS or not ordered by function but by position from left to right. Multiplication and division are equal in priority as are addition and subtraction.

20 / 5 (2 + 2)
20 / 5 (4)
4(4)
= 16

so, if we want to absolutely definite the all the components, we have

20/1 * 1/5 * 4/1

or
20/1 * 1/5 * 1/4

for the sake of clarity, the problem should be presented like the picture, and not that weak ass / shit

Attached: CodeCogsEqn.gif (146x43, 877)

learn to read

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the order of operations is a spook anyway, it's not some law of math. it's purely a convention used because the notation is confusing.

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every day i sit down with my sons and have them tell me what they were taught and what homework they need done.
i correct whatever ass backwards nigger-think the school is indoctrinating them with and tell them why its wrong/not needed.
of course my boys are doing 'poor' by the school's standards. yet standardized testing show my kids do math, reading, and sciences just as well or better than some of their classmates.
i'll be glad when they graduate high school and be done with this bullshit

>kids are so stupid let's just make any answer correct to raise the test scores so we can get that government funding
ie public schools

= 20 / (5(2X2))

What plebs don't realize is order of operations is meaningless in the real world where those numbers represent something. If that equation represented a real life situation it was modeling, the relationships between the numbers (division, addition) would represent a real life situation too. Therefore the order of operations would depend on that particular situation and the relationships between those variables. I'm too high to give an example lol

Not needed if multiplication is done before division

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Kek

The same could be said of the rules of language. You can't just spit out words in random order and expect to communicate well.

You just inserted extra spaces to imply the intent that you wanted to see.

can anyone break this down in common core?

So when they're not flooding kids and brainwashing them with Identity politics they're fucking them up even more by teaching them incorrectly

The parentheses are only needed when adding. Eg, 5 ( 2 + 2 ). When multiplying, the parentheses are just confusing, so 5 ( 2 x 2 ) should really be written 5 x 2 x 2.

For OP’s original expression there is no good reason to write it that way.

...

no

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$ perl -e 'print 20/5*(2*2)'
16

all that matters to me to be honest

>multiplies before doing the parentheses

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How the fuck does anybody get 1? I literally cant see it.

Order of operations. Not a difficult concept.

Google also returns 16
So did my 40 year old maths...

>PEMBA
>Order of Operations
why ignore these things?

i know, hold the phone

It's 16. For the retards who don't understand PEDMAS, division and multiplication hold the same weight, along with + and -. When deciding between the two you just perform operations from left to right.

Prove that this is not true.

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always been 16. How do you get 1?

The proof will depend on whether you think infinitesimals are valid for use in proofs.

In a limit it is true.

With infinitesimals it is false.

>20÷5×4
It's 20/5 * 4 you retard.
Amerimutt education is a joke.

the girl is fucking retarded
stuff on parentheses get priority over stuff outside of it.
solving the division first shows how an absolute dogshit mind would think

if you disagree you suck soros' pussy

you are really retarded

at the end of the day the darker race are still doing badly in maths

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20÷5×(2×2)
20÷5×4
4×4
16

Y'all dummy's need to actually know the order of operations. You do multiplication and division in order left to right.

>I iz suprirar

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Its color not colour eurotrash

20/5(2*2)
20/5(4)
4(4)
16

The correct answer is 16.

Under 20's being smug about being trained to think like a computer

What are even talking about? The only possible way that you could get 1 as the answer is if you are retarded enough to think the / turns it into a fraction and not just another symbol for division

This explains why Amerifags are so fucked these days.

fuck you, the answer is 1.

Please Excuse My Dear Aunt Sally
:)

and also the browning of America too.

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>muh mnemonics
Holy shit my sides

0.9 reoccurring not 1 you fucking imbecil its kind a self explanitory

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