Math: 6÷2(1+2) = ? | |
Anonymous Coward User ID: 27256518 United States 01/13/2013 10:38 PM Report Abusive Post Report Copyright Violation | Okay - the division symbol could be a fraction bar - but it is not in this case. The fraction bar acts like a set of parenthesis.....so, if the division here is like the fraction bar, then you should have used a set of parenthesis - but you did not. This defaults to PEMDAS and the answer is 9. Quoting: Only One 32069745 Back woods Patois |
Anonymous Coward User ID: 32137123 United States 01/13/2013 10:41 PM Report Abusive Post Report Copyright Violation | Well, I'm waiting. What is the advanced, magical math that solves the equation? Quoting: Anonymous Coward 32137123 Simple property. Google "Eliminating Parentheses by distributive Property" So if I do it that way... 6÷2(1+2) 6 / 2 (3) 6 / 6 = 1 I think the real answer is a formula written in a shitty way when it causes a confusion resulting in more than 1 answer. |
huh User ID: 31653585 Chile 01/13/2013 10:47 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 31519086 Australia 01/13/2013 10:50 PM Report Abusive Post Report Copyright Violation | |
sTTsTTT User ID: 4852102 United States 01/13/2013 10:51 PM Report Abusive Post Report Copyright Violation | Six Divided by Two times One plus Two One plus Two equals Three Two times Three equals Six Six divided by Six equals One I only learned through basic Arithmetic in HomeEc. So, please be patient while I slice the Pi...or Pie...or...Heck y'all want it a la mode? Apocalypse: All shall be revealed. And all shall be revealed. ******* All Human Beings are Human. Not all Humans are Human Beings. ******* |
Anonymous Coward User ID: 32057798 Canada 01/13/2013 10:51 PM Report Abusive Post Report Copyright Violation | Totally Quoting: Anonymous Coward 27256518 The answer is 1. Its unreal how surely the 9 folks believe they are correct. Telling indeed. Well, that is the way of the internet these days. Everyone is right, but only because they say it, not because they proved anything, or said anything intellectual backed up by accepted practices. |
Anonymous Coward User ID: 32137123 United States 01/13/2013 10:52 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32057798 Canada 01/13/2013 10:53 PM Report Abusive Post Report Copyright Violation | So if I do it that way... Quoting: Anonymous Coward 32137123 6÷2(1+2) 6 / 2 (3) 6 / 6 = 1 I think the real answer is a formula written in a shitty way when it causes a confusion resulting in more than 1 answer. Yes, that is right. You did it as per all the math references out there. You are 1 out of 1000 that actually learned something. |
Anonymous Coward User ID: 32057798 Canada 01/13/2013 10:55 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32137123 United States 01/13/2013 10:55 PM Report Abusive Post Report Copyright Violation | Totally Quoting: Anonymous Coward 27256518 The answer is 1. Its unreal how surely the 9 folks believe they are correct. Telling indeed. The 9 folks like me believe they are correct because they were taught that when there is a number before parenthesis it means to multiply. In the real world people don't do that. When they want you to multiply they write out the times symbol. I don't know what they taught you in Canada or Australia, but in America you do the math in parenthesis first, then the rest following order of operations. |
WD User ID: 12904180 United States 01/13/2013 10:56 PM Report Abusive Post Report Copyright Violation | Order of Operations It seems that each student interpreted the problem differently, resulting in two different answers. Student 1 performed the operation of addition first, then multiplication; whereas student 2 performed multiplication first, then addition. When performing arithmetic operations there can be only one correct answer. We need a set of rules in order to avoid this kind of confusion. Mathematicians have devised a standard order of operations for calculations involving more than one arithmetic operation. Rule 1: First perform any calculations inside parentheses. Rule 2: Next perform all multiplications and divisions, working from left to right. Rule 3: Lastly, perform all additions and subtractions, working from left to right. The above problem was solved correctly by Student 2 since she followed Rules 2 and 3. Let's look at some examples of solving arithmetic expressions using these rules. -------------------------------------------------------------------------------- |
Anonymous Coward User ID: 31756875 United States 01/13/2013 10:56 PM Report Abusive Post Report Copyright Violation | |
WD User ID: 12904180 United States 01/13/2013 10:57 PM Report Abusive Post Report Copyright Violation | Totally Quoting: Anonymous Coward 27256518 The answer is 1. Its unreal how surely the 9 folks believe they are correct. Telling indeed. The 9 folks like me believe they are correct because they were taught that when there is a number before parenthesis it means to multiply. In the real world people don't do that. When they want you to multiply they write out the times symbol. I don't know what they taught you in Canada or Australia, but in America you do the math in parenthesis first, then the rest following order of operations. |
Anonymous Coward User ID: 20566260 United States 01/13/2013 10:59 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 31335546 Australia 01/14/2013 03:49 AM Report Abusive Post Report Copyright Violation | Totally Quoting: Anonymous Coward 27256518 The answer is 1. Its unreal how surely the 9 folks believe they are correct. Telling indeed. The 9 folks like me believe they are correct because they were taught that when there is a number before parenthesis it means to multiply. In the real world people don't do that. When they want you to multiply they write out the times symbol. I don't know what they taught you in Canada or Australia, but in America you do the math in parenthesis first, then the rest following order of operations. 15 ÷ 3 × 4 is not 15 ÷ 12 [link to www.purplemath.com] |
Anonymous Coward User ID: 31519086 Australia 01/14/2013 04:10 AM Report Abusive Post Report Copyright Violation | from [link to www.purplemath.com] "math won't work if you can't be sure of the answer, or if the exact same problem can calculate to two or more different answers." Oh really? What is the answer to this equation? x = square_root(9) |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:00 AM Report Abusive Post Report Copyright Violation | It seems that each student interpreted the problem differently, resulting in two different answers. Student 1 performed the operation of addition first, then multiplication; whereas student 2 performed multiplication first, then addition. When performing arithmetic operations there can be only one correct answer. We need a set of rules in order to avoid this kind of confusion. Mathematicians have devised a standard order of operations for calculations involving more than one arithmetic operation. Quoting: WD Rule 1: First perform any calculations inside parentheses. Rule 2: Next perform all multiplications and divisions, working from left to right. Rule 3: Lastly, perform all additions and subtractions, working from left to right. The above problem was solved correctly by Student 2 since she followed Rules 2 and 3. Let's look at some examples of solving arithmetic expressions using these rules. -------------------------------------------------------------------------------- "Inside Parentheses" is what they first teach elementary school children. You learn how to really handle parentheses when you get older, by Distribution: "We use the distributive property to help us find a way around the order of operations while still being sure that we keep the value of the expression." [link to en.wikibooks.org] Distribute BEFORE "pedmas" AND use with numbers, possible used to REMOVE parentheses too. [link to www.algebra.com] Get Rid of parentheses with Distribution: [link to www.helpalgebra.com] If there is some factor multiplying the parentheses, then the only way to get rid of the parentheses is to multiply using the distributive law. [link to www.jamesbrennan.org] |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:02 AM Report Abusive Post Report Copyright Violation | Why is this thread still around lol Quoting: J&V Dear Aunt Sally isnt hard to follow 6/2(1+2) 6/2*3 3*3 = 9 Done. :stewart1: The thread won't die because people like you still don't understand how to do math, and we are trying to help you understand Distributing and Factoring. We are not trying to be "right" but rather point you in the right direction so you can see for yourself. |
Anonymous Coward User ID: 31519086 Australia 01/14/2013 06:04 AM Report Abusive Post Report Copyright Violation | If there is some factor multiplying the parentheses, then the only way to get rid of the parentheses is to multiply using the distributive law. Quoting: Anonymous Coward 32057798 [link to www.jamesbrennan.org] is the factor multiplying the parentheses 6÷2 ? |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:05 AM Report Abusive Post Report Copyright Violation | Of course it isn't... However read THIS: Ref: Purplemath [link to www.purplemath.com] |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:06 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32175357 Australia 01/14/2013 06:09 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:14 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:14 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 32057798 Canada 01/14/2013 06:17 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 31519086 Australia 01/14/2013 06:38 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 20566260 United States 01/14/2013 08:43 AM Report Abusive Post Report Copyright Violation | Why is this thread still around lol Quoting: J&V Dear Aunt Sally isnt hard to follow 6/2(1+2) 6/2*3 3*3 = 9 Done. :stewart1: The thread won't die because people like you still don't understand how to do math, and we are trying to help you understand Distributing and Factoring. We are not trying to be "right" but rather point you in the right direction so you can see for yourself. Obviously, you dont understand the distributive property. You only use it when what inside the parenthesis cant be combined. You do parantheses FIRST. If it was (2+x). THEN YOU COULD USE IT. You clearly dont understand factoring either! You use it when what is inside the parentheses cant be combined. I dont think you know the difference of an integer and a nomial either. If it was (3x + 3y) you could factor. ....you need to go back to school!!! |
Anonymous Coward User ID: 30235756 Canada 01/14/2013 08:50 AM Report Abusive Post Report Copyright Violation | FUCK AMERICANS ARE STUPID Brackets first Exponents Second Multiplication Division Addition Subtraction and then work left from right 9 your fucking morons this is 3rd grade math or just type the shit in google search bar if your that fucking stupid or are you all so dumb you can't even copy and paste the question into google. |
DPS User ID: 32178473 Israel 01/14/2013 08:53 AM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 30235756 Canada 01/14/2013 08:57 AM Report Abusive Post Report Copyright Violation | I am guessing DPS stands for DiP Shit as I said if your so stupid you cant do 3rd grade math copy the question into google search bar FUCKING STUPID UNEDUCATED AMERICANS. No wonder your government fucks you up the ass on a daily bases and tells you bull shit 911 Sandy Hook crap to infringe on your rights. [link to www.google.ca (secure)] |