A fake Facebook event disguised as a math problem has been one of its top posts for 6 months
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Not a genius. But if subtraction is last, why isn't it 9-4?
Addition/subtraction work out the same regardless of how you order the operations. If you do subtraction last you start with the original:
9-1+3
and you are adding 3 to the result of (9-1). Since you are trying to perform it before the (9-1) operation is carried out, you can add 3 to the 9:
12-1 = 11
or you can add three to the -1 and get:
9+2 = 11
You only end up with 9-4 if you were subtracting 3 rather than adding three. It all becomes more obvious if you read the original as:
9 + (-1) + 3
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Not a genius. But if subtraction is last, why isn't it 9-4?
It's multiplication or division from left to right followed by addition or subtraction, also from left to right.
That's where a lot of people fuck up.
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US teachers too lazy to teach kids actual maths did.
What’s lazy about learning PEMDAS? And what’s the non-lazy/superior way?
I'm a BEDMAS man myself
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÷ could be a minus sign, see: https://en.wikipedia.org/wiki/Division_sign?wprov=sfla1
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This kind of problem falls under "communicating badly and acting smug when misunderstood". Use parenthesis and the problem goes away.
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So if it's not really an event
And it's not really a math problem
What the hell is it??
Engagement bait
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Boomers and Xgens need to prove, that they remember basic school math in FB lmao.
Please don't include X with the boomers. Since we stepped into the real world and realized it functions completely differently than what we were raised to believe, life's just been a neverending string of "wait, that was wrong too?" We just want to survive another day under the radar.
Sorry fellow X'rs for publicly acknowledging our existence. Hopefully this post doesn't get any upvotes. *Pulls blanket back over my head.
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I guess remembering grade school order of operation means you're a guinus now? Bar has gotten pretty low...
That's the point.
Set the bar low, but just high enough that tons of people still trip over it.
Sit back and enjoy the comment wars.
The people who are confident but wrong are too proud to admit they were wrong even if they realize it, and comment angrily.
The people who are right and know why, comment for corrections and some to show off how S-M-R-T they are.
The people who are wrong but willing to accept that just have their realization and probably don't think about it again. So do the people who don't know and/or care.
But those first two groups will keep the post going in both shares and comments, because "look at all these wrong people"
It's all designed to boost engagement.
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Not a genius. But if subtraction is last, why isn't it 9-4?
Parenthesis, exponents, multiplication, division, addition, subtraction.
should actually be
Parenthesis, exponents, (multiplication and division), (addition and subtraction).
Addition and subtraction are given the same priority, and are done in the same step, from left to right.
It's not a great system of notation, it could be made far clearer (and parenthesis allow you to make it as clear as you like), but it's essentially the universal standard now and it's what we're stuck with.
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Please don't include X with the boomers. Since we stepped into the real world and realized it functions completely differently than what we were raised to believe, life's just been a neverending string of "wait, that was wrong too?" We just want to survive another day under the radar.
Sorry fellow X'rs for publicly acknowledging our existence. Hopefully this post doesn't get any upvotes. *Pulls blanket back over my head.
As a millennial, I'm starting to relate more and more. The world changes very quickly, and all of the sudden things you knew as fact have different meanings, and there are new words and stuff. It's not all bad change, but it's change, and odds are, I'm finding out something changed the hard way.
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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.
This guy is the the guy posting the answer and then spending hours fighting the idiots who got it wrong on Facebook.
Nerd.
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This guy is the the guy posting the answer and then spending hours fighting the idiots who got it wrong on Facebook.
Nerd.
x/0 is the set {+inf,-inf}, fite me IRL.
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Please don't include X with the boomers. Since we stepped into the real world and realized it functions completely differently than what we were raised to believe, life's just been a neverending string of "wait, that was wrong too?" We just want to survive another day under the radar.
Sorry fellow X'rs for publicly acknowledging our existence. Hopefully this post doesn't get any upvotes. *Pulls blanket back over my head.
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.
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This is the kind of post designed to invoke a reaction. Facebook's and pretty much every other algorithm driven social media is designed to promote posts that have high interaction. So a post that invokes lots of negative reactions gets lots of promotion. Hence the downfall of modern society.
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Please don't include X with the boomers. Since we stepped into the real world and realized it functions completely differently than what we were raised to believe, life's just been a neverending string of "wait, that was wrong too?" We just want to survive another day under the radar.
Sorry fellow X'rs for publicly acknowledging our existence. Hopefully this post doesn't get any upvotes. *Pulls blanket back over my head.
The first rule of gen-x is you don't talk about gen-x!
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That's the point.
Set the bar low, but just high enough that tons of people still trip over it.
Sit back and enjoy the comment wars.
The people who are confident but wrong are too proud to admit they were wrong even if they realize it, and comment angrily.
The people who are right and know why, comment for corrections and some to show off how S-M-R-T they are.
The people who are wrong but willing to accept that just have their realization and probably don't think about it again. So do the people who don't know and/or care.
But those first two groups will keep the post going in both shares and comments, because "look at all these wrong people"
It's all designed to boost engagement.
This right here is exactly why it's been so popular for so long.
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That's the point.
Set the bar low, but just high enough that tons of people still trip over it.
Sit back and enjoy the comment wars.
The people who are confident but wrong are too proud to admit they were wrong even if they realize it, and comment angrily.
The people who are right and know why, comment for corrections and some to show off how S-M-R-T they are.
The people who are wrong but willing to accept that just have their realization and probably don't think about it again. So do the people who don't know and/or care.
But those first two groups will keep the post going in both shares and comments, because "look at all these wrong people"
It's all designed to boost engagement.
I like the version where these problems are made purposefully ambiguous so people will fight over it and raise the level of interaction
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Who, the people who never had calculators in their pockets growing up? No worries, we can do math better than you.
lmao
Knowing basic arithmetic does not mean you know Math, and the fact you so hung up about this trivial aspect says a lot about you. Additionally, you express yourself like a boomer.
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As a millennial, I'm starting to relate more and more. The world changes very quickly, and all of the sudden things you knew as fact have different meanings, and there are new words and stuff. It's not all bad change, but it's change, and odds are, I'm finding out something changed the hard way.
Seriously, I was raised with so much propaganda.
Up until my late twenties I had believed basically everything I was taught in school. I never had reason to question it, as I was basically living in a bubble. Imagine my surprise when I discovered that when the colonists arrived to this country, it wasn't just big empty open spaces that the native Americans gladly shared with us. Funny enough, that's roughly when I gained access to the internet.
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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.
Is it also lazy to learn Roy G. Biv to know the color spectrum instead of learning all the physics and optical properties behind that?
Or what about My Very Elderly Mother Just Served Us Nine Pickles to know the planets instead of learning orbital dynamics and astrophysics?
Christ man, it's a mnemonic device for elementary schoolers.
