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# 48÷2(9+3) = ????

• 288
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What do u guys get? I'm getting 288

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This is old, everyone knows its 288.

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Yeah, this is old. The poll should end up being a 50-50 split.

strong aware

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Yeah, this is old. The poll should end up being a 50-50 split.

It should end up being mostly 288 (since this is a Canadian forum).

The only reason its 50/50 on other forums is because of international users (Canada=BEDMAS; other countries=PEMDAS)

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makes sense but when i put it in my calculator it gives me 2.

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there is more than one way to do this? It should definitely be 2.

You can't divide a number by only a factor of it (in this case 2), you have to divide the number by the whole thing!

Am I missing something here? Why is this at all contentious?? lol

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isn't it the same as 48/2 x (9+3)?.... = 24x12 = 288

to get 2 it would have to be 48/(2(2+9))

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isn't it the same as 48/2 x (9+3)?.... = 24x12 = 288

to get 2 it would have to be 48/(2(2+9))

^exactly. Technically, both answers are right. Multiplication and Division both have the same priority.

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It's 288. 48/2(9+3) can be rewritten as 48 * 1/2 * 9+3 = 288.

That is terrible notation, btw.

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^exactly. Technically, both answers are right. Multiplication and Division both have the same priority.

Ummm I dont see how 2 is right... based on the way it is originally written you cannot divide 48 by (9+3)

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It's 288. 48/2(9+3) can be rewritten as 48 * 1/2 * 9+3 = 288.

That is terrible notation, btw.

+1 agreed

except it still should be *(9+3) in brackets otherwise you multiply by 9 and THEN add a 3

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"In other English speaking countries, Brackets may be called Parentheses, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, and since multiplication and division are of equal precedence, M and D are often interchanged,"

-http://en.wikipedia.org/wiki/Order_of_operations

But yeah, its generally agreed upon by the internet (lol) that its 288.

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Yeah, sorry dudez in favour of 2 but there is no enclosure around the "denominator" 2(9+3), therefore it is not all in the demoninator. Based on the left-to-right notation priority it is 48 / 2 * 12. Not 48 / (2*12).

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errr i must be really dumb...i really dont see how you can have 288...

Paretheses first (9+3)=12

So now u have 48 \ 2*12

= 48\ 24

=2

??

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errr i must be really dumb...i really dont see how you can have 288...

Paretheses first (9+3)=12

So now u have 48 \ 2*12

= 48\ 24

=2

??

48÷2(9+3) = ?

Brackets: (9+3)=12

so far its 48÷2(12)

Exponents: -

Division: 48÷2=24

so far its 24(12)

Multiplication: 24*12=288

Lol you're not dumb! I got 2 on my first try too.

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errr i must be really dumb...i really dont see how you can have 288...

Paretheses first (9+3)=12

So now u have 48 \ 2*12

= 48\ 24

=2

??

You don't do multiplication before division. When you see:

48 / 2 * 12

You have to do it in order from left to right. Therefore:

24 * 12

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errr i must be really dumb...i really dont see how you can have 288...

Paretheses first (9+3)=12

So now u have 48\ 2*12

= 48\ 24

=2

??

You must be using PEMDAS, then. OOP states left to right with operations of the same precedence.

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errr i must be really dumb...i really dont see how you can have 288...

Paretheses first (9+3)=12

So now u have 48 \ 2*12

= 48\ 24

=2

??

see erk's post above : you first divide by 2 then multiply by 12, cause 12 is not in the denominator

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I'm intensely disturbed that this many people on a medical school forum are having trouble with grade 7 maths. No offense to those having troubles, it's the education system I'm disturbed by, not you.

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I'm intensely disturbed that this many people on a medical school forum are having trouble with grade 7 maths. No offense to those having troubles, it's the education system I'm disturbed by, not you.

I posted this above, you seem to have missed it.

"In other English speaking countries, Brackets may be called Parentheses, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, and since multiplication and division are of equal precedence, M and D are often interchanged,"

-http://en.wikipedia.org/wiki/Order_of_operations

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And I'm intensely disturbed that me and all of you guys who are online right now don't have a life...since we are refreshing premed101 page during a work day:p caught up in a 7 grade math argument haha

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I'm intensely disturbed that this many people on a medical school forum are having trouble with grade 7 maths. No offense to those having troubles, it's the education system I'm disturbed by, not you.

I blame the notation "÷". You won't really ever see this in higher level mathematics classes.

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I work left to right.

288

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