|
|
|
| Poll Results: What was your outcome? | |||
| 63.04% |
288
|
||
| 36.96% |
2
|
||
| Voters: 46. You may not vote on this poll | |||
|
|
|
Topic Tools |
|
08-08-2012
|
31 |
|
amidoinitrite?
Join Date: Sep 2011
Location: Gold Coast, Australia
Posts: 1,484
|
Pimpsy is right, its 2.
|
|
08-08-2012
|
32 |
|
wat
Join Date: Nov 2011
Location: %appdata%/.minecraft/saves
Posts: 744
|
What is PEDMAS? I was taught BODMAS at school...
|
|
08-08-2012
|
33 |
|
amateur gay
Join Date: Sep 2011
Location: Australia
Posts: 3,372
|
BODMAS is the kiddy version of PEMDAS, which stands for Parenthesis, exponents, division, multiplication, addition, subtraction. Multiplication and division are equal priority and so are subtraction and addition, they should be done left to right. If you think otherwise, blame your education system. It's okay. Dragonrider did it perfectly in the first reply. As for why you wouldn't distribute, the 2*12 comes after the 48/2. That's multiplication, not parenthesis/exponents. /thread |
|
08-08-2012
|
34 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
Exactly. That's what I was taught, and what I believe is correct.
|
|
08-08-2012
|
35 |
|
nothin
Join Date: Jan 2012
Location: York
Posts: 1,483
|
2. I got 2
|
|
08-08-2012
|
36 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
Explain how?
|
|
08-08-2012
|
37 |
|
amateur gay
Join Date: Sep 2011
Location: Australia
Posts: 3,372
|
In my maths class, I asked people 1+1+1*0=? and it made me sad how many people got it wrong.
|
|
08-08-2012
|
38 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
I asked my friend this problem and he got 145. What the hell.
|
|
08-08-2012
|
39 |
|
Enrico Matasa
Join Date: Sep 2011
Posts: 448
|
I got 288. 48/2(9+3) Do the math in the parentheses first and you get 48/2(12) Then this reads as 48 / 2 * 12 and you just work left to right to get 288. I think the whole idea of distributing the number before the parentheses is when you are trying to solve for an unknown variable. |
|
08-08-2012
|
40 |
|
amateur gay
Join Date: Sep 2011
Location: Australia
Posts: 3,372
|
|
|
08-08-2012
|
41 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
I guess you could get 144 by misreading and subtracting the 3 from the 9 instead of adding, but where the hell does the extra 1 come from? Last I checked 4*6 doesn't end in 5. How could you mess that up in your HS senior year? He said both times he did the equation, that was his outcome.
|
|
08-08-2012
|
42 |
|
Awesome Person
Join Date: May 2011
Posts: 217
|
Google Calculator Wolfram Alpha You do whats inside the parenthesis first...don't distribute just because its a parenthesis. In this case the parentheses are just used as a grouping symbol. 48 / 2 * (9 + 3) 48 / 2 * 12 And then multiplication and division is on the same level so you work from left to right. Its not controversial or weird. It's simple math. lol |
|
08-08-2012
|
43 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
Just inputted the equation in C# and Perl calculators, they both spat out 288. Interestingly enough, a Casio calculator my dad uses outputted 2.
|
|
08-08-2012
|
44 |
|
here and there
Join Date: Sep 2011
Posts: 3,619
|
|
|
08-08-2012
|
45 |
|
don't call it a comeback
Join Date: Sep 2011
Posts: 8,268
|
It's a scientific calculator, so I think it does. Some calculators output 288, some 2. Strange. Another reason I think this equation is so debated isn't just the argument of operation precedence, but also the notation as well. People (and apparently some textbooks) that receive 2 argue that implied multiplication takes precedence over the basic MDAS operations. An example of implied multiplication would be x(y) or xy, which in our case is 2(9+3). I still stand by 288, though... Going to ring up my dad's friend who's a teacher at a local math camp. |