A fake Facebook event disguised as a math problem has been one of its top posts for 6 months
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question: is there something more than the expression evaluating to 11?
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on that note, can we please have parentheses in language. i keep making ambiguous sentences
We have them in written language, though?
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You want PEMA with knowledge of what is defined, when people can't even understand PEMDAS. You wish for too much.
I hate most math eduction because it's all about memorizing formulas and rules, and then memorizing exceptions. The user above's system is easier to learn, because there's no exceptions or weirdness. You just learn the rule that division is multiplication and subtraction is addition. They're just written in a different notation. It's simpler, not more difficult. It just requires being educated on it. Yes, it's harder if you weren't obviously, as is everything you weren't educated on.
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So order of operations is hard?
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on that note, can we please have parentheses in language. i keep making ambiguous sentences
Why (I don't see) not
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I'm more worried about the gratuitous comma and what it means for the state of education.
Nah, people can write things while being a bit drunk, you know. I'm speaking for a friend, not me, ofc.
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Anyone on Facebook that attempts to answer this or engage within its comments has already failed the test.
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on that note, can we please have parentheses in language. i keep making ambiguous sentences
Isn't that basically what commas are for?
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Learning the actual algebraic laws, instead of an order of operations to mechanically replicate. PEMDAS might get you through a standardised test but does not convey any understanding, it's like knowing that you need to press a button to call the elevator but not understand what elevators are for.
Though "lazy teachers" might actually be a bit too charitable a take given the literacy rates of US college graduates mastering in English. US maths teachers very well might not understand basic maths themselves, thinking it's all about a set of mechanical operations.
just say you like the smell of your own farts, it would be less text for us to read for the same result
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The average home buyer in the US 17 years ago was born in 1968. Today? 1968. Yeah excuse me but as an elder millennial, Gen X can mostly fuck right off.
You understand that gen x starts around 1965, right? Your stat says they're mostly getting fucked too.
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on that note, can we please have parentheses in language. i keep making ambiguous sentences
People try and use commas for this sort of clarification and are eviscerate for it.
With these sort of math problems, the rules are taught early and then all subsequent math is written in an unambiguous form.
Language has the oddity of going the other way around where the rules get more complex as a display for advanced skills.
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I was good at math and it was one of my favorite core subjects in school, so I know I'm a weirdo but... I never understood how people couldn't understand basic PEMDAS/BEDMAS/Whatever-the-fuck-your-country-calls-it.
Obviously these problems are shitty engagement bait because they don't use parentheses, but still, seeing people fuck up the fact that Multiplication AND Division occur at the same time, and then the next step is Addition AND Subtraction just stupefies me.
Like, did you sleep through 4 years of elementary school to miss that fact??? Even in middle school pre-algebra teachers still did PEMDAS refreshers. I get that once I get out of college I'm probably gonna forget half the pre-calc shit I learned because I won't need it, and I'm not being drilled on it everyday like people in school are, but PEMDAS is a fundamental and basic daily life skill that everyone should know...
I really wish we gave a fuck about US education.
I was bad at math, but I still managed to get through precal and still remember PEMDAS
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People try and use commas for this sort of clarification and are eviscerate for it.
With these sort of math problems, the rules are taught early and then all subsequent math is written in an unambiguous form.
Language has the oddity of going the other way around where the rules get more complex as a display for advanced skills.
eviscerated
God, can you even spell???
Get your act together./s
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Anyone on Facebook that attempts to answer this or engage within its comments has already failed the test.
Anyone on Facebook
that attempts to answer this or engage within its commentshas already failed the test. -
For me it's the arguments when there is a parentheses but no operator (otherwise known as implied multiplication) in these baits e.g. 15 + 2(4 - 2)
If you don't know operator orders I have given up long ago, but I have seen a few lengthy discussions about this
Oh yeah, that's a fun one.
Where I live, this would be considered juxtaposition, at least by uni professors and scientific community, so 2(4-2) isn't the same as 2×(4-2), even though on their own they're equal.
This way, equations such as 15/2(4-2) end up with a definite solution.
So,
15/2(4-2) = 3.75
While
15/2×(4-2) = 15
Usually, however, it is obvious even without assuming juxtaposition because you can look at previous operations. Not to mention that it's most common with variables (Eg. "2x/3y").
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I'm more worried about the gratuitous comma and what it means for the state of education.
What, gratuitous, comma?
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I'm sure we're all geniuses here, but just in case...
Please excuse my dear aunt Sally.
Parenthesis, exponents, multiplication, division, addition, subtraction.
Why? Because a bunch of dead Greeks say so!
3x3-3÷3+3
(3x3)-(3÷3)+3
9-1+3
8+3
11
The "why" goes a little further than that.
In actuality, it's because of fundamental properties of operations
- Commutation
a + b = b + a
a×b = b×a
- Association
(a + b) + c = a + (b + c)
(a×b)×c = a×(b×c)
- Identity
a + 0 = a
a×1 = a
If you know that, then PEMDAS and such are useless because they're derived from those properties but do not fully encompass them.
Eg.
3×2×(2+2) = 3×(4+4) = 12+12 = 24
This is a correct solution that is improper if you're strictly adhering to PEMDAS rule as I've done multiplication before parenthesis from right to left.
I could even go completely out of order by doing 3×2×(2+2) = 2×(6+6) and it will still be correct
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Arguing about maths is like dancing to architecture.
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I hate most math eduction because it's all about memorizing formulas and rules, and then memorizing exceptions. The user above's system is easier to learn, because there's no exceptions or weirdness. You just learn the rule that division is multiplication and subtraction is addition. They're just written in a different notation. It's simpler, not more difficult. It just requires being educated on it. Yes, it's harder if you weren't obviously, as is everything you weren't educated on.
That's because (strictly speaking) they aren't teaching math. They're teaching "tricks" to solve equations easier, which can lead to more confusion.
Like the PEMDAS thing that's being discussed here. There's no such thing as "order of operations" in math, but it's easier to teach by assuming that there is.
Edit:
To the people downvoting: I want to hear your opinions. Do you think I'm wrong? If so, why? -
You understand that gen x starts around 1965, right? Your stat says they're mostly getting fucked too.
And you understand that 68 is after 65? They're not getting. Fucked, they're the last ones to be able to afford housing ownership. If the average is 68 that means one side of the bell curve extends well into the generation.
