I watched one of your videos on another problem like this. Remembered the OOOperation or PEMDAS. So figured it out right away. So proud of me, YAY! Thanks again.
You rock! I love how you move through the problems. I Really only need time enough to put it into my mind. I feel so bad for those who don’t have a mathematical mind
As a middle school math teacher, I always wrote PEMDAS vertically with MD on same line and AS on same line to show they are “equal” functions… P E MD AS. We still would call it PEMDAS. It fits the phrase in meaning too. Please Excuse “My Dear” “Aunt Sally”
My teacher only touched on all this crap for 10 minutes in year 3 BOMDAS THAT IS FOR EXPRESSIONS WRITTEN CORRECTLY You show no sense changing it How can you divide a bracket with x inside if you do not x first?
Yes, as a teacher, I would not go through the wrong ways in such detail! You never know what is going to “stick” in the brain of the kid in the back row falling asleep.
Yes, he's the only "teacher" I have seen that takes so long for this simplicity. At the beginning of an explanation, you never want to teach the wrong way because it totally confuses so many students. After the students do it wrong, then explain where they went wrong and repeat the correct way.
@@kathleendawnhall9130 , How on earth did you get 22? In maths, those divide signs get converted to multiply, and then you just multiply everything. ÷2 = x 0.5 = x(1/2) . You replace the ÷2 , and it 148. You're supposed to get the same answer every time if you substitute ÷2, x0.5 , or x(1/2). All 3 give the same answer of 148. If you get 22, then all 3 of those substitutions should also give you 22. If you get 148 twice and 22 once, then you probably did something wrong to get 22.
@@avibhaganhe got 22 because with the parentheses as indicated he was giving priority to implied multiplication, which is indeed what happens when you get into algebra and beyond.
What I learned is that PEMDAS has a further development. MD & AS are to be considered subgroups and applied sequencially in that subgroup😮 Pretty essential stuff!!
PEMDAS and BODMAS use different words to say exactly the same thing. Neither of them say "do multiplication first" nor "do division first." They both mean "multiplication and division have the same precedence, when you come across either do them from left to right"
I got it right but it was a pure fluke because I use BODMAS and had forgotten (always do) about the D and M being in a group and going from left to right.
@@laurendoe168 One of the many indictments of PEMDAS/BODMAS is that explicit precedence is lost. If the Secret Decoder Ring is not used a PEMDAS-dependent expression becomes twisted. I would hate to be an astronaut and find out the mission planners relied on PEMDAS.
2 *x* 8?? Are you looking for this symbol? *×* It is nothing like *x* and using x where you should be using × is a great way to confuse your students. I see you've already found ÷, surely you can do better than "x" for multiplication.
In the real world you would get a lot of wrong solutions. PEMDAS is not a rule, only a convention used in the 17% of the world that speaks English. There is nothing binding about PEMDAS.
Problem is notation. This has changed since I went to school. New rules=new result. Semantics not arithmetic. Try it physically: add 10 eggs to 16 eggs, divide by 2, 13 eggs then multiply by 8, 104 eggs, then finally multiply by 2 baskets: 208 eggs. I test negative numbers at my cafe with scientist friends. Take 3 beers from these 2 beers, show me the 1 negative beer...
HAMMER THE LIKE BUTTON. :) 4 IN A ROW LOL. Next week maybe feel empowered enough to tackle the exponents in the numeric expression ;) I can not believe I am actually subscribed! to a MATH CHANNEL LOL
Some people get screwed up on these because they learned either PEDMAS or PEMDAS and stick strictly to that, not accepting that DM/MD are calculated in the order in which they appear.
Nếu ký hiệu đó là dấu nhân trong toán học thì kết quả của bài toán là 148. Nếu ký hiệu đó là một ẩn số thì ta có biểu thức được rút gọn : 2( 10+1/x) hay (20x+2)/x . Đó là một hàm số khi gán cho x mọi giá trị thì có được giá trị của biểu thức đã cho.
@@joelethridge3020 there is an implied equal sign at the end of the statement. He could have used the dot or an upper or lower case X like in most of his other videos. If he used a y It would have made sense immediately, like when he rewrote the problem to solve it for the audience, after doing that it took less than 15 seconds to solve. Since a lot of his videos remind us to reread the problem and understand what is being asked before just making assumptions and solving it in my head and selecting the answer, which often leads to careless mistakes and confusion.
That doesn't just look like a variable x. It is a variable x. You can get away with substituting a sanserif x (or at a pinch even a serif one) for a proper multiplication sign ×. (Just as you can get away with using a dash - (or even a hyphen - in place of a minus sign.) As long as it's roman and not italic. You definitely can't do what this video does.
Actually PEMDAS doesn’t matter at all, neither does Orders of Operations. When you multiply the 2 through the parentheses you get 2*10 + 2*16/2 * 8, the 2’s cancel on the division and you get 20 + 16 * 8 = 20 + 128 = 148, which is the only valid answer, no PENDAS required or applicable.
You should NEVER use distribution when there is a division inside the brackets, it can result in the wrong answer. It happens to work here but it won’t always. Example 2(4÷2) Distribute: 2(4÷2)→8÷4=2 Don’t distribute: 2(4÷2)→2*2=4
@@thenetsurferboy Mathematics is a precise discipline; language is an imprecise discipline. The original comment above says BODMAS is "Brackets Of Division, Multiplication, Addition and Subtraction." It is actually, Brackets Order Division Multiplication Addition Subtraction. Or maybe it is Big Old Dog May Attack Skunks. The world of serious math would be better if PEMDAS and BODMAS did not exist. Proper use of brackets/parentheses produces expressions that are the same around the world.
148. Work inside parentheses first. Division and multiplication are equivalent in priority and are performed left to right. So 16/2=8. Then 8*8=64. Then 64+10=74. Finally multiply 74 by 2 giving us 148.
True. Using "X" as a multiplication symbol does not survive high school in America. Multiplication is most commonly indicated by parentheses: 3(x+2) = 3x+6. BTW: the "dot operator" as in x · y produces a scalar product in advanced mathematics.
Silly math's problems, as this example has exposed, shows that full punctuation is required. Without full punctuation, assumptions are made, leading straight into the error pit. I was taught "full punctuation", meaning checking your answer before committing was easy.
Teachers need to STRESS that the MD are EQUAL operations and if the Division is BEFORE the Multiplication Left to right, you DIVIDE first THEN multiply. Same with the AS. Subtract if it's before an addition.
Never in my wildest dreams could I have guessed that a variable "x" was used to mean "times!" From algebra on up, DOT is used for multiply, not x, but you even ITALICIZED the x, when the other figures are all non-italics. But without any equals sign, it's not an equation, and has no solution. It's just a TERM, and the answers are not terms.
I am 76, in my day BODMAS ruled, today I have met PEMDAS, BEDMAS and I expect there are others. Whatever in 30 seconds I had answer “B”. If the modern generation are going to need calculators and 20 minutes to solve these equations, the education system is doomed.
Completely thrown by the x being multiplication, looks more like a substitution symbol. hence my first answer 20+128x. 🙄 No problem once the x is taken to be multiplication.
I always thought mathematical problems like this one should be written with more parentheses and brackets. (Maybe I missed math class on the day when Order Of Operations was taught.)
Yes they should. And the purpose of this exercise is to teach people how it should be processed so that they would be able to add the parentheses in the proper places.
Good luck with that. If you see an equation in any physics or engineering text, a/bc, and you think the division is done first, you will get it wrong. The multiplication is taken to be in the denominator.
Unless textbook publishers do things differently these days, I never have seen in a textbook an equation written in typewriter mode, rather do it the right way with a fraction bar so there is no possibility of confusion.
If you use PEMDAS as I show it below to evaluate this inline expression which I pulled from an engineering website , your building will likely fall to the ground: Cantilever Beam Slope, Deflection with Uniformly Distributed Load (Inline expression) Deflection at any section = Px^2( x3 + 6L2 - 4Lx )/24EI is evaluated as Px^2( x3 + 6L2 - 4Lx ) ------------------------------------- 24EI , NOT PEMDAS interpretation, which is wrong: Px^2( x3 + 6L2 - 4Lx ) ----------------------------------- * EI 24
Iinky-Pinky-Ponky father had a donkey donkey died father cried Iinky-Pinky-Ponky Iinky-Pinky-Ponky method gives the correct answer faster than any other.
You drag out giving the explanation of the correct answer so long that I run out of time to wait for you to get to it. I don't need to inprint in how to get it wrong.
if you teach in the classroom the same way you teach on youtube then you are driving your students crazy. this video should have taken 3 minutes tops. you droned on and on for 17 minutes. horrible.
@elmerwilliamson1970…some people need a more definitive explanation. Not myself, but some. Too much for you? Apply your finger and move on. Bring the teacher an apple, not a complaint.
You can always hit the screen and make it speed up or move ahead at will or as needed. There are many people that want to learn, many who have not heard of PEMDAS and many who got the answer wrong and want a detailed explanation. I fast forwarded a couple of times and I don’t have a problem as it’s free app that has a lot of valuable info.
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
I watched one of your videos on another problem like this. Remembered the OOOperation or PEMDAS. So figured it out right away. So proud of me, YAY! Thanks again.
Me too!
Omg. Teachers like you are the reason I flunked math. You took what should have been a 3 minute video and turned it into an agonizing 17 minute video.
You could just move on
True it was teachers like these who made me dumb at maths. TYPICAL maths teache
Thank you 🙏🏾 so very much for taking the time to teach/refresh our minds 😊😊😊
2(10+8x8)=
2(10+64)=2•74=148
Thank you. I now got the right answer 148 after you explained the order of operations concerning M or D doing what you see from left to right.
I'm 78 and have just learnt maths!!!! Yeah, my grandkids are so proud of me.😊
Remember that multiplication and division, like adding and subtraction, are equal functions. You do them from left to right, using PEMDAs as a guide.
You rock! I love how you move through the problems. I Really only need time enough to put it into my mind. I feel so bad for those who don’t have a mathematical mind
Easy to do in my head. Getting better at math and credit goes to your teaching. Thank you.
Yes!! I got it! Only because you have been teaching me. thank you so much.
Thank you teach I have started to refresh my math mind thanks to you!!!
Love your gentle, quiet voice ❤helpful details❤
As a middle school math teacher, I always wrote PEMDAS vertically with MD on same line and AS on same line to show they are “equal” functions…
P
E
MD
AS. We still would call it PEMDAS. It fits the phrase in meaning too.
Please
Excuse
“My Dear”
“Aunt Sally”
My teacher only touched on all this crap for 10 minutes in year 3
BOMDAS
THAT IS FOR EXPRESSIONS WRITTEN CORRECTLY
You show no sense changing it
How can you divide a bracket with x inside if you do not x first?
We must have to follow
Basic rules of Basic Mathmatics.
PEMDAS
Order of Operations in Mathmatics
17 minutes for a 2 minute explanation. Now i know what is wrong with todays education system.
Yes, as a teacher, I would not go through the wrong ways in such detail! You never know what is going to “stick” in the brain of the kid in the back row falling asleep.
Agreed.
Don't listen. Unsubscribe. Obviously he's not the teacher for you.
Yes, he's the only "teacher" I have seen that takes so long for this simplicity. At the beginning of an explanation, you never want to teach the wrong way because it totally confuses so many students. After the students do it wrong, then explain where they went wrong and repeat the correct way.
If you don’t like it, don’t watch.
Thanks for the review!
Another PEMDAS biscuit. Thanks Boss.
B . 148 is the answer.
If it was written as 2(10+16÷2(8)) , the answer would be 22.
22
Looks like the Pemdas Rule also is Not a Definite Rule…..
@@kathleendawnhall9130 ,
How on earth did you get 22?
In maths, those divide signs get converted to multiply, and then you just multiply everything.
÷2 = x 0.5 = x(1/2) .
You replace the ÷2 , and it 148.
You're supposed to get the same answer every time if you substitute ÷2, x0.5 , or x(1/2). All 3 give the same answer of 148.
If you get 22, then all 3 of those substitutions should also give you 22.
If you get 148 twice and 22 once, then you probably did something wrong to get 22.
@@avibhaganhe got 22 because with the parentheses as indicated he was giving priority to implied multiplication, which is indeed what happens when you get into algebra and beyond.
@@petersearls4443 , lol.
You're insane.
Juxtaposition supercedes brackets in higher math.
That is the opposite of what you insist.
What I learned is that PEMDAS has a further development. MD & AS are to be considered subgroups and applied sequencially in that subgroup😮 Pretty essential stuff!!
what is the difference between the symbol x italicized, and x not so if they both seem to indicate multiplication?
It's an error. X is multiplication X italicised is an algebraic unknown, as in 'solve for X'. Everything about this video hella woolly
@TabletClass I know you support PEMDAS but what do you think about BOMDAS?
PEMDAS and BODMAS use different words to say exactly the same thing. Neither of them say "do multiplication first" nor "do division first." They both mean "multiplication and division have the same precedence, when you come across either do them from left to right"
I got it right but it was a pure fluke because I use BODMAS and had forgotten (always do) about the D and M being in a group and going from left to right.
@@laurendoe168 One of the many indictments of PEMDAS/BODMAS is that explicit precedence is lost. If the Secret Decoder Ring is not used a PEMDAS-dependent expression becomes twisted. I would hate to be an astronaut and find out the mission planners relied on PEMDAS.
2 *x* 8?? Are you looking for this symbol? *×* It is nothing like *x* and using x where you should be using × is a great way to confuse your students. I see you've already found ÷, surely you can do better than "x" for multiplication.
Worst teacher ever😂
Not good at math but did pemdas and got A. Thank you, teach. 😊
In the real world you would get a lot of wrong solutions. PEMDAS is not a rule, only a convention used in the 17% of the world that speaks English. There is nothing binding about PEMDAS.
Problem is notation. This has changed since I went to school. New rules=new result. Semantics not arithmetic. Try it physically: add 10 eggs to 16 eggs, divide by 2, 13 eggs then multiply by 8, 104 eggs, then finally multiply by 2 baskets: 208 eggs.
I test negative numbers at my cafe with scientist friends. Take 3 beers from these 2 beers, show me the 1 negative beer...
Nothing has changed since you learned. Order of Operations was established in the 18th century.
HAMMER THE LIKE BUTTON. :) 4 IN A ROW LOL. Next week maybe feel empowered enough to tackle the exponents in the numeric expression ;) I can not believe I am actually subscribed! to a MATH CHANNEL LOL
Some people get screwed up on these because they learned either PEDMAS or PEMDAS and stick strictly to that, not accepting that DM/MD are calculated in the order in which they appear.
I got confused because your X in the thumbnail looks like a "variable x' not a multiplication sign.
😂 same problem with me I got confused x
Nếu ký hiệu đó là dấu nhân trong toán học thì kết quả của bài toán là 148.
Nếu ký hiệu đó là một ẩn số thì ta có biểu thức được rút gọn : 2( 10+1/x) hay (20x+2)/x . Đó là một hàm số khi gán cho x mọi giá trị thì có được giá trị của biểu thức đã cho.
There is no equal sign with numbers on the other side so the X has to be a multiple sign. It's not an equation and no way to determine a variable.
@@joelethridge3020 there is an implied equal sign at the end of the statement. He could have used the dot or an upper or lower case X like in most of his other videos. If he used a y It would have made sense immediately, like when he rewrote the problem to solve it for the audience, after doing that it took less than 15 seconds to solve. Since a lot of his videos remind us to reread the problem and understand what is being asked before just making assumptions and solving it in my head and selecting the answer, which often leads to careless mistakes and confusion.
That doesn't just look like a variable x. It is a variable x.
You can get away with substituting a sanserif x (or at a pinch even a serif one) for a proper multiplication sign ×. (Just as you can get away with using a dash - (or even a hyphen - in place of a minus sign.) As long as it's roman and not italic. You definitely can't do what this video does.
Never learned this in school but have seen problems like this. I had no idea how to proceed. Yeh me! I got it.!
A. 22 ?
That “times” symbol is wrong it looks like an x. Result 148.
16:2 = 8 x 8 = 64 + 10 = 74x2 = 148
In the UK it's called BODMAS (brackets order...)
Does the “or” variation apply to + and - as well? Are + and - left to right first as well?
3:38 148 using Oder of operations
Yes
Yes
Order of operations:
PEMDAS &
left to right first for multiplication or division ; addition or subtraction DM/DM, AS/SA
A) 22
Actually PEMDAS doesn’t matter at all, neither does Orders of Operations.
When you multiply the 2 through the parentheses you get 2*10 + 2*16/2 * 8, the 2’s cancel on the division and you get 20 + 16 * 8 = 20 + 128 = 148, which is the only valid answer, no PENDAS required or applicable.
You should NEVER use distribution when there is a division inside the brackets, it can result in the wrong answer. It happens to work here but it won’t always.
Example 2(4÷2)
Distribute:
2(4÷2)→8÷4=2
Don’t distribute:
2(4÷2)→2*2=4
Yes I got it! So pleased for a change
I use BODMAS formula. Brackets Of Division, Multiplication, Addition and Subtraction. 2(10+16÷2×8)=?
16÷2=8, 8×8=64, 10+64=74, 2×74=148
Somewhere along the line someone confused BOMDAS WITH BODMAS
@@thenetsurferboy Mathematics is a precise discipline; language is an imprecise discipline. The original comment above says BODMAS is "Brackets Of Division, Multiplication, Addition and Subtraction." It is actually, Brackets Order Division Multiplication Addition Subtraction. Or maybe it is Big Old Dog May Attack Skunks.
The world of serious math would be better if PEMDAS and BODMAS did not exist. Proper use of brackets/parentheses produces expressions that are the same around the world.
148. Work inside parentheses first. Division and multiplication are equivalent in priority and are performed left to right. So 16/2=8. Then 8*8=64. Then 64+10=74. Finally multiply 74 by 2 giving us 148.
Always wanted to learn how to do this and now I have.😊
The multiplication symbol looks like an X (EKS), which changes things
No, there is a clear space between 2 and x. It is not 2x.
Yes its the wrong symbol for multiplication. It wouldn't take much effort to use the correct symbol.
@@robertdriscoll9414😂😂😂
True. Using "X" as a multiplication symbol does not survive high school in America. Multiplication is most commonly indicated by parentheses: 3(x+2) = 3x+6. BTW: the "dot operator" as in x · y produces a scalar product in advanced mathematics.
Silly math's problems, as this example has
exposed, shows that full punctuation is required.
Without full punctuation, assumptions are made, leading straight into the error pit.
I was taught "full punctuation", meaning checking your answer before committing was easy.
No
Order of Operations spells it out. One and only one answer 148.
The multiplication sign should be a "block" lettter, and NOT whatever character/font John has chosen to use.
Teachers need to STRESS that the MD are EQUAL operations and if the Division is BEFORE the Multiplication Left to right, you DIVIDE first THEN multiply. Same with the AS. Subtract if it's before an addition.
Thanks. I am just learning.
Love 🎉 your channel 🎉
The first operation is 16 divided by 2
The last operation is 2 times 74
Reply: 22
Why in the world did you use a variable looking X for multiplication? I got the answer correct, but YOU used the incorrect symbol for multiplication.
Never in my wildest dreams could I have guessed that a variable "x" was used to mean "times!" From algebra on up, DOT is used for multiply, not x, but you even ITALICIZED the x, when the other figures are all non-italics. But without any equals sign, it's not an equation, and has no solution. It's just a TERM, and the answers are not terms.
I am 76, in my day BODMAS ruled, today I have met PEMDAS, BEDMAS and I expect there are others. Whatever in 30 seconds I had answer “B”.
If the modern generation are going to need calculators and 20 minutes to solve these equations, the education system is doomed.
Completely thrown by the x being multiplication, looks more like a substitution symbol. hence my first answer 20+128x. 🙄 No problem once the x is taken to be multiplication.
I got 22 or 148, depending on the order of things: but I will go with, since I know that's the right answer and since I see where I was wrong!!!
Based on the original problem you got it right at 22.
The problem is even with the Rules of Pemdas it is Not the way it said in Pemdas….
Yes it is multiply and divide left to right.
I always thought mathematical problems like this one should be written with more parentheses and brackets. (Maybe I missed math class on the day when Order Of Operations was taught.)
Yes they should. And the purpose of this exercise is to teach people how it should be processed so that they would be able to add the parentheses in the proper places.
PE(MD)(AS) 148
Good luck with that. If you see an equation in any physics or engineering text, a/bc, and you think the division is done first, you will get it wrong. The multiplication is taken to be in the denominator.
Unless textbook publishers do things differently these days, I never have seen in a textbook an equation written in typewriter mode, rather do it the right way with a fraction bar so there is no possibility of confusion.
If you use PEMDAS as I show it below to evaluate this inline expression which I pulled from an engineering website , your building will likely fall to the ground:
Cantilever Beam Slope, Deflection with Uniformly Distributed Load
(Inline expression)
Deflection at any section = Px^2( x3 + 6L2 - 4Lx )/24EI is evaluated as
Px^2( x3 + 6L2 - 4Lx )
-------------------------------------
24EI
, NOT
PEMDAS interpretation, which is wrong:
Px^2( x3 + 6L2 - 4Lx )
----------------------------------- * EI
24
I agree with you. How can we get schools (teachers) to teach PEMDAS correctly.
A 22
A-22
2(10+16÷2×8)=
16 ÷ 2 = 8×8 =64 10 + 64 = 74
2 × 74 = 148
Or you could just write the equation much more clearly using parentheses as appropriate so there is no confusion.
Answer is 22
I got confused at first because the x looked like an ex, but i still got the correct answer.
Why weren't you my high school Algebra teacher?
I got b) 148 is it right???
Yea! I got it correct. I followed the order of operations! Thank you.
Thanks, teacher
Should be 22
Got that one! I'm learning!
÷2x8? Look at the question again. I can see an "ex" and not × a multiplication sign.
Have a ✖️ mas
Are you doing a math problem? Would have been quicker to read a Dickens novel.
Indian version of PEMDAS could be "please excuse my dear anna swamy."
It's too easy. Thanks.
Over the years I went from a math genuiness to a moreRon.
Multifunction before division doesn't work here. Multiplication before division PEDMAS not PEMDAS
PEDMAS is the same thing as PEMDAS. MD vs DM in the acronym doesn't change anything.
this is actually an easy one. the Exams only have one or 2 of these 😂
8*8 is 64 plus 10 is 74 x s2 is 148
Got it right!
The answer is 148, that is letter 'b'
B)148
The answer is B, 148.
B))148
208?
😂
c 208
B -148
(B) 148
A little too verbose, but I learned a lot. Thanks.
Iinky-Pinky-Ponky father had a donkey donkey died father cried Iinky-Pinky-Ponky Iinky-Pinky-Ponky method gives the correct answer faster than any other.
Answer is letter b 148
b)148 is the answer
You drag out giving the explanation of the correct answer so long that I run out of time to wait for you to get to it. I don't need to inprint in how to get it wrong.
b) 148
B 148
BiDMAS for order of operations.
Option B is correct Answer= 148
B 78
I meant 148😅
I m mathimation of Pakistan (Peshawar)❤🎉
B...148
148. Ans.
B. 148
if you teach in the classroom the same way you teach on youtube then you are driving your students crazy. this video should have taken 3 minutes tops. you droned on and on for 17 minutes. horrible.
You take way too long explaining! Apply the rules and move through the problem!
This guy is a great teacher but he is a bit long winded!!😅
@elmerwilliamson1970…some people need a more definitive explanation. Not myself, but some. Too much for you? Apply your finger and move on. Bring the teacher an apple, not a complaint.
I agree with EVERYONE else you talk unnecessarily too much.
Seems you can do better so start your own channel.
You can always hit the screen and make it speed up or move ahead at will or as needed. There are many people that want to learn, many who have not heard of PEMDAS and many who got the answer wrong and want a detailed explanation. I fast forwarded a couple of times and I don’t have a problem as it’s free app that has a lot of valuable info.
B)148. ?🎉💯⭐yea.