Current Events > because people still seem to be confused: 8/2(2+2) isn't math.

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Medussa
08/02/19 11:08:27 AM
#1:


it's trolling designed to look like math. be better; don't fall for it.
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eston
08/02/19 11:09:19 AM
#2:


It's a pretty simple problem, they taught us order of operations in middle school

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TheBiggerWiggle
08/02/19 11:09:25 AM
#3:


Its 16.
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bobtuse
08/02/19 11:10:40 AM
#4:


Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.
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mattnd2007
08/02/19 11:14:11 AM
#5:


TheBiggerWiggle posted...
Its 16.



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Eevee-Trainer
08/02/19 11:14:58 AM
#6:


Seriously. There's so much better stuff to argue about than this shit.

0.999... = 1 is at least legitimately interesting and an unintuitive result - if you're new to it - despite being a meme here. I'd rather see that than the billionth "ambiguous notation, go fight" troll attempt that everyone bites on because no one fucking learns.
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jpenny2
08/02/19 11:15:50 AM
#7:


Imagine expecting a user on CE to not fall for trolling.
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CheekSqueak
08/02/19 11:16:35 AM
#8:


Medussa posted...
it's trolling

we all know this but you HAD to make a topic about it...who's playing into it more?
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EdgeMaster
08/02/19 11:18:40 AM
#9:


TheBiggerWiggle posted...
Its 16.


Lol.

bobtuse posted...
Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.


Its so funny youd say this. Everyone with a 6th grade education or above should be familiar with order of operations.
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Doe
08/02/19 11:21:43 AM
#10:


It's meant to fuck with people due to the slash mark. A lot of people envision the problem as the slash separating the numerator and denominator
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action52
08/02/19 11:48:42 AM
#11:


Doe posted...
It's meant to fuck with people due to the slash mark. A lot of people envision the problem as the slash separating the numerator and denominator
Yes, this is what threw me the first time I saw this. It's not that I don't know the order of operations, it's that I'm not used to seeing math problems written out that way.

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kingdrake2
08/02/19 12:20:07 PM
#12:


i thought it was 10 :(. didn't get it right.
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OctilIery
08/02/19 12:31:38 PM
#13:


EdgeMaster posted...
TheBiggerWiggle posted...
Its 16.


Lol.

bobtuse posted...
Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.


Its so funny youd say this. Everyone with a 6th grade education or above should be familiar with order of operations.

It's funny you say this, just after you laughed at someone who got the answer right.
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bobtuse
08/02/19 1:04:28 PM
#14:


OctilIery posted...
It's funny you say this, just after you laughed at someone who got the answer right.

lol gotem
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MTRodaba2468
08/02/19 1:15:04 PM
#15:


bobtuse posted...
Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.


Just a heads up, if you're claiming to not be familiar with the Order of Operations, you're implying that you've never been taught them, and since that stuff was taught in grade school and the younger middle school classes at the latest, you may be outing yourself as an underage user on the site.

Just so you know...
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legendarylemur
08/02/19 1:18:56 PM
#16:


Yeah you literally learn the order of operation either around when you learn multiplication or after you've also learned division. In fact I can't even freaking remember what grade that is because it was eons ago, but you learn it pretty damn quick.

America worries me sometimes

Actually when I was in Korea, I learned division at around 2nd grade or so? When I came here at 3rd grade I had to learn it again like a few years later and just coasted through Math. It's not that America sucks at Math, it's more like they're circularly driving themselves into a corner where they are bad at Math

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Medussa
08/02/19 1:36:03 PM
#17:


and... everyone missed the point. =(

The answer to this isn't 1. it's also not 16. it's "rewrite your fraction to remove the ambiguity"

this isn't an order of operations issue. the problem is with the slash. if that was a division sign, then great, PEMDAS away. but it's not. It's a solidus, making this an ambiguous fraction. it needs to be rewritten as either (8/2)(2+2) or 8/(2(2+2)).
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ZMythos
08/02/19 1:39:27 PM
#18:


Medussa posted...
The answer to this isn't 1. it's also not 16. it's "rewrite your fraction to remove the ambiguity"

No, the answer is 16.

"/" is divide first and foremost.
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CheekSqueak
08/02/19 1:45:01 PM
#19:


ZMythos posted...
Medussa posted...
The answer to this isn't 1. it's also not 16. it's "rewrite your fraction to remove the ambiguity"

No, the answer is 16.

"/" is divide first and foremost.

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EnvoyOfTheLight
08/02/19 1:48:06 PM
#20:


Medussa posted...
and... everyone missed the point. =(

The answer to this isn't 1. it's also not 16. it's "rewrite your fraction to remove the ambiguity"

this isn't an order of operations issue. the problem is with the slash. if that was a division sign, then great, PEMDAS away. but it's not. It's a solidus, making this an ambiguous fraction. it needs to be rewritten as either (8/2)(2+2) or 8/(2(2+2)).


Make no excuses for anyone who forgets their parentheses.
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legendarylemur
08/02/19 1:48:59 PM
#21:


It is ambiguous for sure, but it is still solvable by order of operation, just that some other places would interpret it in a different way. It necessarily "isn't math" more than ambiguous but solvable by human eyes. Not by something like Wolfram tho lul

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#22
Post #22 was unavailable or deleted.
Verdekal
08/02/19 1:56:48 PM
#23:


PEMDAS is a human created convenience anyway. Stupid, rigid rule following.

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EnvoyOfTheLight
08/02/19 2:06:20 PM
#24:


Verdekal posted...
PEMDAS is a human created convenience anyway. Stupid, rigid rule following.


Sometimes 2+2 just feels like a 7, right?
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Bad_Mojo
08/02/19 2:08:03 PM
#25:


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_Rinku_
08/02/19 2:11:34 PM
#26:


bobtuse posted...
Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.

Some people misunderstand the order of operations and think it is a strict sequence. I've seen people argue, very angrily, that the multiplication has to be done before the division. Or even arguing that you have to get rid of the parentheses first.
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bobtuse
08/02/19 2:12:38 PM
#27:


MTRodaba2468 posted...
bobtuse posted...
Agreed. It just exists so people who are familiar with Order of Operations can suck themselves off and act like they're smarter than those who don't.


Just a heads up, if you're claiming to not be familiar with the Order of Operations, you're implying that you've never been taught them, and since that stuff was taught in grade school and the younger middle school classes at the latest, you may be outing yourself as an underage user on the site.

Just so you know...

I'm 31, and I also know order of operations. My point is that people are stupid to be patting themselves on the back for knowing this.
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andy113456
08/02/19 2:17:40 PM
#28:


The issue here isn't knowing order of operations. The issue is bad formatting.

So we have 8/2(2+2)

Are we looking at:
a. 8/2 * (2+2)
b. 8 / 2(2+2)

It's dumb. We all know we can solve either of these.
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dave_is_slick
08/02/19 2:24:42 PM
#29:


action52 posted...
it's that I'm not used to seeing math problems written out that way.

They're written like that all the time.
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dave_is_slick
08/02/19 2:25:48 PM
#30:


legendarylemur posted...
In fact I can't even freaking remember what grade that is because it was eons ago, but you learn it pretty damn quick.

Third grade. Everybody here has no excuse.
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dave_is_slick
08/02/19 2:27:06 PM
#31:


legendarylemur posted...
In fact I can't even freaking remember what grade that is because it was eons ago, but you learn it pretty damn quick.

Third grade. Everybody here has no excuse.andy113456 posted...
Are we looking at:
a. 8/2 * (2+2)
b. 8 / 2(2+2)

Those are the same thing.
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andy113456
08/02/19 2:41:54 PM
#33:


dave_is_slick posted...
legendarylemur posted...
In fact I can't even freaking remember what grade that is because it was eons ago, but you learn it pretty damn quick.

Third grade. Everybody here has no excuse.andy113456 posted...
Are we looking at:
a. 8/2 * (2+2)
b. 8 / 2(2+2)

Those are the same thing.


Wow, very insightful, thanks.
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kingdrake2
08/02/19 2:42:11 PM
#34:


i figured it out, it's 10.

everyone else in response because it's wrong:
XsUtdIeJ0MWMo
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action52
08/02/19 2:56:53 PM
#35:


action52 posted...
I'm not used to seeing math problems written out that way.


dave_is_slick posted...
They're written like that all the time.


No, usually when a problem in math class is written horizontally they use the symbol. And while I certainly see the / symbol used online to indicate division, it's rare for me to see a series of different calculations written out on one line. When I think back on the times in school when a fraction symbol was used as part of a series of calculations, it would be a line that split it in half into a top and bottom that was treated separately.

I can remember seeing both this:

82(2+2)

and this:
__8__
2(2+2)

But not this:

8/2(2+2)

Seeing it in the fractional form made my brain picture the second one the first time I saw a problem like this online. This is what is happening to most people who get it wrong. It's not that we don't remember the order of operations, it's that we format it differently in our minds.

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dave_is_slick
08/02/19 3:30:29 PM
#36:


action52 posted...
I can remember seeing both this:

82(2+2)

and this:
__8__
2(2+2)

But not this:

8/2(2+2)

I saw nothing but the third one in school.
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