10 divided by 2 times 5 = ? Many don’t get this BASIC Math concept! (Order of Operations) 

Yes. A teacher should be able to help even the weakest of the weak in the class. That was a "must" for the teachers where I taught in the Primary section.

100% it all starts with the teacher and the attitude!! It takes a certain teacher to make it click!!! So true!!!

I got stuck @ Trinomials...

Math is easy. Just practice it and learn the rules/tricks to solve the problems.

I agree 💯.. a really good teacher is one who makes things understandable and simple for each & everyone in the class

So the answer is 25 (people make it sometimes to difficult) If there where braces () it would be 1.

I'm 70, so just a youngster, but got it right too. Now for some Trigonometry.. .

70, too, got it!👍

Going on 70 so I gave two answers just in case. 😂 My dad was the Father of New Math.

We get it right because we went to schools that actually taught subjects rather than social ideology. Lol.

This was easy for me and I am kissing 80 next week.

Exactly what I was taught in UK

Yes way we learnt in New Zealand (BODMAS)

Learned BODMAS in Singapore too.

Which is wrong.

@@jesperlykkeberg7438 No, you are wrong. Watch the video again. Multiplication and Division have equal standing so they are therefore carried out from left to right in the order they appear. Likewise Addition and Subtraction have equal standing and are carried out L-R in the order they appear. So 5 + 4 x 4 ÷ 2 - 3 can be rewritten as: 5 + (4 x 4) ÷ 2 - 3 5 + (16 ÷ 2) - 3 5 + 8 - 3 = 10

Its all adds.

Wow!

You could follow PEMDAS and still come to 1. All depends on how you interpret PEMDAS. In PEMDAS multiplication comes before Division, and then there are people who say, 'yeah but even in PEMDAS they are equal, so you do them left to right, after the Parenthesis and exponents.

​@@Ed19601yea i followed it in order glad 1 got some remeidial math here

Same here. I was chastised for asking a question in algebra class. I always ranked in state tests etc. but was never encouraged to go to college. No counselors in my poorer fam community school.

Maybe both of you did not use proper PRONOUNS!! School is not about education anymore it is about indoctrination!! LOL

@@johnb-us6bf class of '78. we only had boys and girls when I went to school.

@michaelmacpherson-wm6mh and bluefidle, I am so very, very sorry that your teachers did not affirm your capabilities and encourage, and even help you, to further develop your skills.

@@jannh29 I know nothing about algebra at all. may as well be Chinese. I think geometry would have been interesting to learn.

There are no brackets and the answer is 1 it's obvious

​@garrysysling445 I disagree. The answer is 25. If you are using PEMDAS, you are applying it incorrectly. Multiplication and Division, if present in the same equation, are of the SAME level. And therefore you do them in the order in which they appear from LEFT to RIGHT. In this case DIVISION is done FIRST not MULTIPLICATION.

And this becomes one of the many reasons why mathematics are loathed by myriad students. This problem isn't testing one's knowledge of true arithmetic principles, it's trying figure out if you can apply some hair-brained acronym and then remember the "special rule" that makes the two letters equal, so just do it left to right. What a crock... if you want the answer of 25, write the problem as (10 / 2) x 5. I mean, what's a few keystrokes between friends, right?@@topkatz58

@StiyaShanthan Yes, it has the same meaning as PEMDAS. P=B and E=I in our different acronyms. M and D same level. A and S same level. When it's simplified, work left to right.

They didn't say there are brackets, they were simply stating how they were taught@@garrysysling445

I had never heard of it before, either, despite being in Grammar School (in England the highest secondary school after primary school). I just always knew that brackets and exponents came first. I later moved to Germany and took a maths course. There I learned what they refer to as “point calculation (M and/or D) before line calculation (A and/or S)”, which is basically PEMDAS (multiplication is indicated with a simple . in Germany, as opposed to an x and division is indicated with a colon :, which confused me terribly at first, but hence the “point calculation”).

Unless was written that way. 10/( 2 x 5 )=1 If it was written like this video. Than 25 is correct.

Because they didn't know BODMAS(from UK or EU).

1

THANK YOU! The left to right decision regarding multiplication vs division and addition vs subtraction was never explained to me. I am 67. I always struggle with these little math challenges because I thought PEMDAS was 100% the order of operations.

@@xbman1 Actually, the way it's written is rather ambiguous.

Poor Aunt Sally.!

66 Here

0

Me 2. Central Valley here.

I taught elementary school students with learning disabilities. Using the acronym was especially helpful for them. Whatever works!

I agree❣

Too easy? Aren’t you special 😂

@@eagle-eye29 Jealous?

I was thinking the exact same thing..

Pad it out to over 10 min for that sweet, sweet monetization.

But the words you use mean nothing

exactly! 👍

@bujgirl did in fifty words what he couldn't in eleven minutes. lol

And this equation works left to right but not all of them do.

@PaulDredge1815 I'm 55 and didn't know it either . Which would explain why I struggled in algebra , albeit did great at geometry :\ But in your left to right understanding . You knew enough intuitively to do the brackets and powers first ? So really this acronym arbitrary rule ... is a tack on to an intuitive function in math formulation. Where knowing the real world application to these data points , and how to compute them. Renders this late 19th century math rule , pointless , and actually a cause for more confusion errors with computing . Just thinking to one of my real world uses in calculating the cubic yards of cement for a basement floor .

@@Mk101T Stupid rules with no explanation should NOT make you feel inadequate.

@@gordonhill8164 Well it certainly does not stop errors from being introduced by the admin that collected and formulated the data into an equation. And looks like a nifty way to hide or siphon money by knowingly swapping around the order of operations .

I'm 65 and have had algebra and three semesters of calculus in the US. This kind of problem is just a stupid scribble and should be ignored. If you see a thing with a division sign and NO CLEAR MEANING to the numerator and denominator, you are being TROLLED. Run away and enjoy your life, cause you don't need this endless bickering. You have been set up.

Lol. The comment section is confusing to me. Straight forward operation, no paratheses. One obvious answer. I went to the k.i.s.s school. Keep it simple, stupid Yay, old maths and logic !!!

There's no such thing as new math or old math. There really hasn't been any changes in math for hundreds of years. What HAS changed is the method for teaching it and the way teachers approach teaching the subject. Instead of rote memorization which was the way for longer than most of us have been alive, they have decided to teach students different ways of approaching math problems. The trouble is, they didn't teach these new methods to the parents, so the students are left with nobody to help them understand these concepts other than their overworked teachers, who themselves may, or may not, understand these new methods. Some academics somewhere thought it would be good to create this new system and call it Common Core. It was partly inspired by political and social issues rather than being a solely mathematical endeavor. The politically and socially motivated educators thought it would narrow the racial and socio-economic gaps between students. This is, of course, a terrible way to develop an educational system, especially a mathematical one. To further complicate things, the students being taught these new concepts are in for a rude awakening when they get to higher education and the work force, as both of those institutions still rely on the previous methods of doing math, so now students must relearn math the old way. Common Core must die and never be brought back. Teachers need to return to the old system so we can bring back the success we used to have. We can find other ways to solve the racial and socio-economic issues involved.

We counted actual beans in primary school. The visual aspect helped me. Convoluted process gets lost in my head. Now I just tell people “don’t math at me” 😅😅😅

I am your generation and my old math tells me it is 1 🙂

Me too, except for any new "interest". Made it thru a two year engineering degree because I understood the "Concepts" (even in Physics). The one thing in later years I learned, was that "Math" is just a Tool; not an end in itself, not unless you're "intuitive", then more power to them. The late Physicist Richard Feynman, pointed out something too regarding "teachers"...most all math is taught Wrong! He's well worth looking up here on the "Tube", as a side note, he worked on the Manhattan Project as well, and had quite a sense of humor...he took great delight in putting Top Secret Papers back on the desktop of one of the top scientists after he had locked them up in a drawer before leaving for the night (lap drawer firmly locked). Feynman finally told him how he did it....just reached up and around the lap drawer and pulled them out :-).

@@festeradams3972 yes I'm aware of Feynman. I remember seeing him on TV back in the early 70's I think. I didn't read much about him until fairly recently. Sounds like he had great sense of humor.

A book about him covers that. It's called "Surely you're joking Mr. Feynman".@@robdavidson4945

I agree

This is absolutely BS. If you have a rule PEMDAS, then it should be followed, and to support your argument you totally disregard the rule

​​@@jonathanraven5939So you don't understand the rule. Got it. He just explained it for you.

I thought I knew it.

@HarryHewitt-lh8xxIt is if you just bear in mind that M and D are one group, both operators with equal priority, so whichever comes first is solved first. The same applies to A and S.

It's not different. It's done in the order they appear, in this case division, then multiplication. There really is no hierarchy in this equation, since the only operators used are of equal importance.

As a RoT (Rule of Thumb) something like 'dots come before lines' makes sense. But ONLY if one uses a specific set of symbols.

I was taught (Netherlands) to strictly stick to "Meneer Van Dalen Wacht Op Antwoord" (Dutch version of PEMDAS) and to not switch half way through to 'from left to right' So: first Power (Machtsverheffen), Multiplication (Vermenigvukdigen), Divison (Delen) Rooting (Worteltrekken), Addition (Optellen), Subtraction (Aftrekken). Seems way more logic to me, but, it is all about what system one chooses. When in doubt, use parenthesis

The "P" in PEDMAS stands for "work inside the parentheses first", but the original problem doesn't have any.

We never learned PEDMAS. I learned this way , and before this was the old way that I still use. There’s no symbol I can find on my keyboard.

ditto

Me too. Biology was my friend

Great answer 🤣🤣

1

Especially when a prior set of rules has been used for years before PEMDAS was devised.

@nancy668 They actually did change. Division and multiplication have same value. Parentheses first. Then mult. or division from left to right - whichever came first. In this case, division is first, so it's 10/2, then × 5.

@@MR-lq7ssthe chicken came first😂

@@Cancionera40I nevr heard of either, but got it right just doing L to R gave me 25

@@awillis244 Eggsactly!

I'm 68, and I also learned under New Math... which I loved. (FYI: BODMAS is PEMDAS using different words.)

The New Math system was horrible and I believed it crippled many student's early understanding of basic algebra.and geometry. I know it did mine as I had to fill in the gaps by my own efforts.

I am 71, and despite hating maths all my life, I got it right, by doing nothing fancy just starting at the beginning and continuing.I am a bit chuffed.

Your comment is exactly my point Bradley. PEMDAS was not taught in the "New Math". It was mostly group and ring theory along with mathematical "proofs" which was ridiculously pre mature for high school students.

Me too Brad...the acronym didn't exist yet.

really ? I am crap at maths but for me this was obviously 25

I thought the answer was 1 too so you are not alone. Lol 😂

LOL, I'm 56 and just learned it too! Better late than never! ;)

@@jimpark5591 To be quite honest, everything we have been taught, is a lie. I kid you not. We have been big time deceived by the “powers that be”. You must be born into God’s family to see with spiritual eyes, how the earth “shaped up” after Noah’s flood. It will blow you away.

@@jimpark5591 Just to come back and check that my comment that I made to you got deleted. I know 100 percent that the censorship has hit the charts. Liars hate the truth. satan and his filthy demons know that their days are numbered and they don’t want anyone to know the truth.

Thank you for this! I was like well isn’t there supposed to be brackets? What if there is brackets? Lol 😂 school was a long time ago and I certainly forgot my math skills 😂☺️

Yeah, but apparently, some people believe PEMDAS is literally done in that order.

@@fiveoctaves That is true. I know when I was first taught this in class the teacher did explain the grouping of MD and AS could be done in either order. I am an engineer, so this stuff is etched into my mind.

@@scottguitar8168 Same for me. We had better teachers than some others...or some people didn't pay attention or forgot!

My too. I was taught X always was done before /

When multiplication and division are encountered without parentheses, they are performed left to right. The same goes for addition and subtraction.

I was told these 2 groups are reciprocal operations. Funny how mostly we all get the gist of the big picture, even though it was taught in different ways. The more linear that some were, the more wrong and confused they were with their equations. 👍

So some people were not taught that some powers of operations are equal and must be calculated left to right. What bad math teachers they had!

In that specific instance, both are correct. The entire point of that meme is that there is no universal standard for how to interpret implied multiplication after inline division. That's why different calculators give different answers. It's not a properly formed mathematical expression.

Agreed! Give me the parentheses. Even if I know the proper order of operations, I wouldn't assume that the person writing it knows the correct order and is conveying it properly. As an engineer, if something came to me like this, I would request written clarification.

We never learned order of operation in math and I had great math teachers from 6th grade on up. We used the parentheses, brackets, braces too. I graduated in 1986.

@@cdykstra6 WOW and this out of the mouth of an engineer. You can write this 15/(4+1) and everything is fine but if you write this (10/2)X5 I would dearly doubt your profession, sure for an everday joe this may make sense and delete confusion but in as an engineer this looks highly unproffessional. Even worse if I give you this 10/2X5 and you ask for clarification I again would deeply doubt your profession and I couldn´t take you serious as an engineer anymore...

was just thinking this!.... This guy is an engineer and works with other engineers and is talking ab not knowing basic math and not trusting other engineers to know basic math. Scary.@@reinerhoch1357

One math teacher in Hong Kong was extremely strict. If you write down the statement (10 - (5 x 3)) + 2 you will get a big "X" and zero marks for your answer. It has to be [10 - (5 x 3)] + 2. Personally I find that a bit extreme - she basically cared more about form vs. function. In Canada I have not run into a teacher that will deduct marks for using the first example.

Never heard of this We just did it....

That is why I always use parentheses to make it explicitly clear what I mean. Especially when I find myself reading code I wrote years ago.

This is important.... Because the answers are very different, depending on the way one is taught.

25?

@@Atheist_Rhapsody (10/2)5

I like your PEPS idea, would solve this - as you wouldn't guess the amounts of arguments I have had over questions like this. People seem to know the PEMDAS rule but never apply it correctly. So I can see the value in what you purpose. As the amount of times I have tried to explain that, with OUT the brackets, you simply go left to right through the equation in the order it is written in the equation. As in math, brackets are used to manipulate the order of operation to give the output you require. i.e in this case, if you wanted the answer to be 1, the sum would be written as 10 / (2x5) = 1.

@@rianmacdonald9454 Thankyou. I've been heard by the internet 👏👏👏. You're a wise man 👍

You make my head ache.👍🤣🤣🤣

My thing with PEMDAS is only in a its lack of consistency. Ok, P,E,(MD)(AS) I get it, you group the inverses. But then it should be P(ER)(MD)(AS) Parentheses Exponents and Roots. Multiply and Divide. Add and Subtract

@@MrGreensweightHist Yep, same idea.

In our language, We read from left to right. Also, there is always that "exception to the rule" in spelling correctly. Mash that together & voila!

You are correct. The PROBLEM GIVER should make all division parts clear to you. The numerator, the denominator, if not, then the answer is "you didn't ask this right, fix it and ask me again". There is no clear answer. We might also look into the value of 1/0 and sqrt(-1)

Makes much better sense to me than the above!

good to give the order of operation than the math genius showing off.

So nothing about exponents?

@@TheaKaSaToRi The exponents is the O in BODMAS. Meaning "Orders" or "Power Of"

In the Philippines we use PEMDAS to solve multiple equations

I grew up with BODMAS too, but I always thought it was division before multiplication, and addition before subtraction. Seems I was wrong all along, unless it is different for different countries. I am from the UK. But that is not to say everyone in the UK was taught that. I may have just misunderstood.

25

I was looking for this comment.

Brackets would be equivalent to parenthesis and Exponents is the same as Order, Both of which are not in the equation.

25 !

💯💯

Yes I was taught PEMDAS. The public school system failed me 😂😂

On the other hand, if you give them £1 in change instead of £25 they should be happy, and so will you.

you were never told that? really? You probably never had problem because equations are typically never written like that. Division is pretty much always written fractional form.

You never had a problem because no one would write an expression this way. This is only designed to trick people. They'd write it as a fraction which would make clear what the denominator is. As it is written now, 10 / 2 x 5 = 10 x 1/2 x 5, which then makes it clear the answer is 25. If they wanted the answer to be 1, they'd have written it with 2x5 as a denominator of a fraction.

@@RobOfTheNorth2001 Look what happens if you forget about MD and DM being qual and both should go left to right. But think as a calculator that need follow a clear order instead. Whenever you switch the multiply and division you seem to get the other answer. Thats why i think google is full of questions like: Multiply or divide first??

@@Syphirioth a calculator (at least the simple ones) simply performs the operations you tell it on two numbers. It has no concept of 'left to right'. The person inputting has to know what order they want the operations performed. As I mentioned elsewhere, no one would actually write an expression this way but instead use a fraction to make clear if they mean 10/2 x 5 or 10/(2x5). For the latter, someone who doesn't know calculators would still have to input 2x5, remember that answer, then input 10 / 10.

@@RobOfTheNorth2001 Thats the problem with older calculators. They can't remember 2 answers given by DM or MD and see it as equal. It had to do either one of them first according to the program. So it follows those orders literally. Thats why some devices have different outputs with the same input. Because DM and MD are switched. See if you want a calculator to figure out bigger sums at once instead of left right it needs to know an order of calculation. otherwise it would do only left and right as you said. So what order you give it? PEMDAS or BODMAS whats the problem you get with certain inputs? The machine gonna do it wrong. And the case of 6:2(1+2) shows that problem perfectly. Because certain machines seem to prioritize multiplication before divide. and they get a 1 then the funny thing is when you ask this to google. Google gonna use brackets on the 6:2 also... Guess why? Wouldn't it be to prioritize 6:2 over the multiplier??

“Maths” with an s? Obviously British or maybe Australia.

@@jamesdennis2058 oh yes, 🇬🇧 you say Math 🙂

@@scottw5253 Hey, it’s just how everyone said it. How it was printed on the week’s schedule and given to me! No one seems to have a kind word or a warm heart anymore and that saddens me. Maybe someone should have taught you better manners!! You need to know how your negativity has compounded a situation. I’ve just lost a close friend and I’m grieving. Taking my mind off it for a little while I watched a few videos and thanked them for taking the time to share and lift my spirits. Then you go and spoil that moment of peace. Think before you speak, and if you haven’t got anything good to say, keep it firmly SHUT! 😡

@@cu4wur6023I’m sorry Carol for the rudeness. I had to take Algebra for my science classes pre-Nursing. I had an India tutor and a Vietnamese teacher. They were so awesome that I took a next level course just for the fun of it 🤪

@@scottw5253 Maybe you could have benefited from knowing that “maths” is a more British term while “math” is more American. It is much like colour or color. She’s not wrong, but the term indicates that she has a British influence so she learned “maths.” My late wife was Canadian, so we ran into these differences often.

Nope. Only one correct answer. And no it wouldn’t have been different in years past.

In early 60's Australia we were taught BOMDAS not BODMAS this is just another example of a time slip people talk abt.

The O stands for Order, not Of, but yes, it was the way we were taught back in the day, although for the life of me I cannot remember the acronym being used back then!!

@@peterhead9981 In Australia we were taught and use BOMDAS _ where this bodmas comes from is a bit sus. B _ brackets O _ treat of as a bracket M _ multiplication D _ division A _ addition S _ subtraction

@@iandaniel2153 - strange, Ian. Australia seems more in tune with the American PEMDAS. Why we should be different is anyone's guess!

Don’t remember any anagrams at school in the U.K. in the 1980’s, but the answer is 25.

I only knew PEMDAS

How many of you actually learned math and not just acronyms and shortcuts?

​@@shawnkearney2004not me 😢

What do the B and O stand for?

B = Bracket O = Of

Good. Correct.

I am 65 years old RN. Never in my adult life have I ever had to use any algebra.

@@TC-eo5eb i am a semi truck mechanic. I use it frequently.

@@TC-eo5eb I'm about to turn 50, and I have...numerous times.

This is not Algebra it’s standard school mathematics.

You must be Trump's accountant.

Love it 😂

Absolutely love this. So true.

And people think accountants are not creative 😊

Answer is 25

You are lucky. I spent 37 years working with software. I ran into poorly coded expressions maintaining other people’s code. So I would have to determine if the end values were what were actually desired and then go back and add parentheses where appropriate.

Yeah your correct, bracket and parenthesis must always be used in actual and exact/normal application to avoid confusion, only in tricks and carnaval / fancy events a problems like this occur/// i know pemdas/bidmas but dont give problems like this especially to common non math enthusiast ///

The main reason for the existence of such a RoT (Rule of Thumb) is when forced to write a maths statement as were it a sentence.

Which fingers do I count as brackets? 🤔

@@WtWm-fw7wo All 20. I you look at it the Spanish way...🥸

@@WtWm-fw7wo 😂

Correct…

In India we follow the same method BODMAS

I was taught BOMDAS in school, South Africa following UK standard apparently. When did the change come about?

​@@kanabapuka Even in PEMDAS the multiplication comes first. The wind must have changed direction.

Then, when do you work the exponents in that method? I'm from the USA and taught math in this century. I grew up in the 60s and 70s in school but don't remember which method was taught.

do you mean BODMAS? Not BOMDAS...

I hate maths with a passion and have dyscalculia (the dyslexia of maths), I still don't understand whats hard about this it's very basic.

Ok, so what was your answer? Empty claim....

1 @@mrbmp09

@hereandthere6001 duscalculia......never heard of it. Another made up term for someone who is just crap at math

@@hereandthere6001 I assume that you are not math Prof at yale now???

@@miraak8523 25. Piece of cake. SMACK DOWN !

Perfect comment! 👍

My intention was to write the same comment 😄

又长气又唚气，口水多过茶 . Literally means 'annoyingly long-winded, more saliva than tea". I stop watching at 5:11

Perfect my friend. The only comment here that makes sense. People just want to memorize rules without trying to think and understand the real world application of a calculation. Engineers are trained to think if the results makes sense while math teacher are trained to memorize rules of math operations.

It is neither of your examples. It is 10 ÷ 2 x 5, quite simple. It's not looking for any parentheses or brackets to be added.

@@martinglenn27 In a pig's eye.

@@martinglenn27 It's actually the second example, because removing the parentheses does not change the order of the operations.

If you know the order of operations, parentheses are not necessary and could actually confuse the issue in a simple problem like this. I think the acronym may need to be clarified-PE M/D A/S or PE[MD][AS], something like that.

@debbietroyer9480 why do you feel the need to change it? It is quite straight forward already.

1

Thank you for this refresher course.. I must have missed this day in math class because I've had trouble my whole life with this very issue.. in all of my classes through high school and college.. anything with math.. I understood the principles but could not get the grade on tests. . Algebra geometry physics all sub par But I made it through and am retired now but still curious. .

@@mikederiggi2523 : What stipulates that the multiplication is performed first?

@@mikederiggi2523 : Wrong. 25. The problem is solved left to right.

@@wrongfullyaccused7139 The rules of mathematics are not that complicated multiplication and division have the same priority so you solve the equation from left to right.

Do you see how BODMAS is correct while PEMDAS is misleading??

i really dont see how anyone gets this wrong

@@BobbyJardine-vs8yc No, because the acronym you learned is not the problem. Some were also taught BOMDAS, or BIMDAS,. All you need to know regardless of what acronym you learned is that multiplication and division are worked together equally no matter what order they happen to appear in the equation from left to right and the same goes for addition and subtraction. Refer to the OP's post.

In Canada it's BEDMAS

Yes you are right. We use in India same. BODMAS. It is easy to remember as it means rascal in Hindi.

Yes that’s the one

The same in Australia.

in phil it is MDAS❤

Yeah. Exactly because this is just confusing. The order of operations acronym only applies until it doesn't ... i mean what ? That just confuses things to the point of asking well why have that acronym in the furst place? Make up a better one. I used to make up my own. And the point is. Once learned these acronyms, to later find they don't fully apply in all circumstances. The danger is that some, if not most will end up just ditching the whole concept and loose interest in maths

PEMDAS/BODMAS/BEDMAS are wrong as they mislead into the concept that multiplication & division, as well as addition and subtraction, are different operations thus order matters. If you simply use them correctly, order does NOT matter as division is multiplication & subtraction is addition. At least PEMDAS is a bit better as it doesn’t put subsets ahead of the overarching set by putting division ahead of multiplication, but I still wouldn’t teach it except maybe as PEMdAs parenthesis (in this case brackets may be a better label); exponents; multiplication, including division; addition, including subtraction. 10 * 1/2 * 5 = 10 * 5 * 1/2 = 1/2 * 5 * 10 = 1/2 * 10 * 5 = 5 * 1/2 * 10 = 5 * 10 * 1/2