Order of Operations & PEMDAS Made Easy! - [8-3-1]
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- เผยแพร่เมื่อ 2 ต.ค. 2024
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In this lesson, you will learn how to perform order of operations using PEMDAS in math. PEMDAS means parenthesis, exponents, multiplication, division, addition, and subtraction in math. This is the proper order to calculate mathematical operations - hence it is called the order of operations. The first step is to identify any parenthesis in the expression. If there are parenthesis or brackets, do what is inside of those first. Next, perform exponents. Addition and subtraction are performed on the same level left to right. Multiplication and division are performed left to right as they are also on the same level.
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I'm 63 and you're still teaching me math and making it fun . Thank you !!!
Welcome!
Your ability to teach is beyond the scope 💕💕💕!
One question no one never answers is what is the practical application of Order of Operations.
Why does it matter, left-to-right. PEMDAS BODMAS.
I can see two solutions but what is the meaning or purpose.
My books from 1970s show a strict left to right. P then E then M then D then A then S.
I have test papers from that era that's how we were taught.
I understand people today using this in a calculator get diff answer than the old method but in 1973
none of were using calculators, my question remains why does it even matter?
love your videos, especially, the combination and permutations videos. I'll keep watching.
According to the rules taught in German schools: 6/2(1+2) = 1
parentheses, exponents, IMPLIED MULTIPLIKATION, multiplication, division, addition, subtraction
6/2(1+2)= 6/ 2(3) = 6/ 2*3 = 6 [fraction bar] 2*3 = 6/6 = 1
I calculated it with a calculator prescribed by the German school authorities.
TI calculators are banned in German schools because they calculate according to PEMDAS
CASIO pocket calculators, FX-82DE, are required in German schools because they calculate according to PEJMDAS
Yes, MDAS is still used up to the 4th grade, but when higher mathematics is taught, PEJMDAS is normal
Thank you so much I always thought PEMDAS was so difficult but I didn't know it was this simple again thank you I now feel like I can ace that PEMDAS test😌
@Blizzard-king I am not at all surprised that you found PEMDAS so difficult.
I just realized why I was never successful in Algebra when I was young. Won't say how old I am but I learned PEMDAS as Please Excuse My Dear Aunt Sally. This whole time I thought the order was exactly that. Addition before subtraction and multiplication before division. Now I know why I struggled so much in Algebra. I wish we had internet, and you tube back when I was at school. I am here today learning to teach my middle school aged child.
Thanks v much. Its a Value subject .
Such an excellent teacher!
the reason multiplication and division are at the same level is that division doesn't exist, division is a multiplication, 15/5 is really 15*1/5
for this example it would be 10*(1/5)*2 so you could do the (1/5)*2*10 if you wanted to or 2*10*(1/5)
the same is true with subtraction it doesn't really exist, it is an addition 4+6-9 is really 4+6+(-9)
im in love with this mans teaching im getting ready to take my accuplacer for college and I mean he breaks everything down to understand
Thank you very much
8-3-1 Are we adding or subtracting
Sir there are four types of parenthesis,while removing this order of removal should strictly followed
What does S in Bodmas stand for..if you say subtraction, fo you ever use subtraction in Bodmas. Think. I use BOMA.
I was taught BODMAS - Brackets Of Division Multiplication Addition Subtraction.
However the left/right priority was also taught
I wouldn't accept an expression with the ./. division sign, preferring the ------ to show a division. As you show later at 14mins,
@hit_sa_office The 'Of'' bit. But I take your point. Its what I was taught.
BIDMAS:
B - Brackets
I - Indices
D - Division
M - Multiplication
A - Addition
S - Subtraction
@hit_sa_office exponential are actually multiplication. Eg 2³ is actually 2*2*2..
@hit_sa_office exponent is the Of
Mr small I was also taught that way. Order was not important. As long as you use the correct rules. I am assuming you are from south Africa. Half of 2+2. Our Bodmas caters for of. Thanks.
Thank you, this has helped me so much and it's easier than P.E.M.D.A.S. I'm getting prepared to take my hiset math exam
Another example: 10/ 5x. x=2
first you have to calculate 5x. 5*2 = 10 ( IMPLIED MULTIPLIKATION before multiplication and division)
then 10/10 = 1
And now I show that PEMDAS is wrong:
10/ 5x. x=2
10/5 *x=
2/1 *x=
2 *2 = 4. In practice, this method of calculation leads to incorrect results, because IMPLIED MULTIPLIKATION was ignored
@MathAndScience If all of 20 minutes or so is needed to make a RoT (Rule of Thumb) easy to use, then said RoT was poorly designed.
Poor design is indeed the issue with BIDMAS/PEMDAS/&c. The problem is that NOT all the RoT's letters are the 1st letters of OPERATIONS. At this point the RoT's designer should have removed the D & the S from the RoT, to have only BIMA (or PEMA, &c) left. Because any person teaching maths (& ALL mathematicians) should KNOW that neither division nor subtraction is an OPERATION.
THIS POINT is what any-&-all these many videos should have addressed right at its start, ie the video should have DEBUNKED the RoT.
ANY attempt at sort-of validating the presence of the D & S shows that the video's author should NOT be placed at the front of a classroom ADDRESSING the students, but be sitting WITH the other students.
I am truly sick-&-tired of teachers slavishly adhering to incorrect curriculum--especially when such a teacher KNOWS that the curriculum is wrong!
I have no idea whether YOU are 1 of those teachers (who KNOWS that the curriculum is wrong), because by 1:40 I had heard enough to validate stopping the video there.
thanks sir veery nice
It is interesting that you included an explicit multiplication sign in the expression 35-3(4^2-10).
Can you explain why?
Don't implied multiplication and expressed multiplication yield the same result?
Thank you so much!! Math is really like learning a new language an your an excellent teacher, when it comes to bridging that gap! Thank you so much God bless you!!
Mnemonic devices such as PEMDAS or BODMAS can be misinterpreted and are therefore not necessary in order to understand how the Order of Operations functions. Sadly, some people need a "crutch". Mnemonic devices are not meant to be taken literally. Just learn the four basic rules used to evaluate math expressions.
PEMDAS can still be used, you just have to remember the rule of left to right when performing Multiplication / Division and Addition / Subtraction. If it's learned correctly, then it still works. P-E-MD-AS. I see WHY you're saying that you don't like it though. I see people using it wrong often because they never learned the rule (or, as you say, they forgot it). Good lesson! 👍
This helped a lot! I have my exams coming up and this really helped :>>
I’ll tell my score after I get my result :)
Mr ismail why wouldn't you accept/
another amazing lesson sir so understandable gives me confidence to move forward
Wow! This is very informative, thanks for sharing it with us. It worth it and the best tutorial on the topic for me.
Order of operations has to be followed strictly otherwise we wrong. Eg.
4÷2^2=?
4÷2×2=2×2=4 incorrect
4÷2^2=4÷4=1 correct.
I couldn't agree more. Where and why did they change the way this is taught.
I remember when so-called New Math came along in late 60s early 70s.
It took a whole sheet of paper to solve one division problem
One question never answers is what is the practical application of Order of Operations.
Why does it matter, left-to-right. PEMDAS BODMAS.
I can see two solutions but what is the meaning or purpose.
My books from 1970s show a strict left to right. P then E then M then D then A then S.
I have my test papers from that era.
@@timfronimos459 i don't know about your old books. If we follow strictly the PEMDAS rule, there is no necessity to go from left to right. Since multiplication and division have the same priority, to solve this issue, it's necessary to go from left to right.
Your ability to teach is absolutely amazing! Ty for sharing your skills!
You’re very welcome!
You are a great teacher. I wish growning up you where there... The school teachers were rude and exploited that I was ignorant to the subject... My apologies Thanks for your help...
So grateful for you man.
Please add audio track for Hindi or urdu
Who made that PeMDAS thing.. it makes our kids stupid.😢😢
Why?
I remember my dad how to do math ➕➖➗♾️
Tnx a lot Sir ❤
Amazing, like.✨🟰🧠
THANK Y... SIR...!!!
Excellent 👌👌 lesson thank you very much dear teacher
Welcome!
Where’s Part 2?
(20÷4)= 5 (5+3))= 8 (8•2)= 16
Helped😊
Nice 👍
(4+8)÷12(:12÷12)= 1
(10÷5)= (2 •2)= 4
-3 - 15 = - 12
Great explanation
Thank you so much!
Another great lesson in giving us a thorough understanding of order of operations. I really like how the problem is resolved step by step and in a variety of ways. Thank you )
Welcome!
Please
Excuse
My
Dear
Aunt
Sally