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Order of Operations - PEMDAS

Let the debate begin .....

It's 9, and I can't believe people don't understand order of operation. How do you debate it? It's a right and wrong question.

You also go left to right, if that helps.

Oh, and when there is no operation to sort out in between the parenthesis, you can treat is as multiplication.

reply to post by satron


The debate depends on whether you rewrite the action after solving the parenthesis.

6 / 2 (1+2) =

do you rewrite it like this 6 / 2 ( 3 ) =

or like this 6 / 2 x 3 =

Does it matter?

I actually had a hard time figuring out how you could come up with one as the answer.

6/(2(1+2))

Thanks OP, now my head hurts. :bnghd:

Originally posted by satron
It's 9, and I can't believe people don't understand order of operation. How do you debate it? It's a right and wrong question.

You also go left to right, if that helps.

Oh, and when there is no operation to sort out in between the parenthesis, you can treat is as multiplication.

edit on 12-6-2012 by satron because: (no reason given)

Yes, but when written like this

6 / 2 ( 3 ) =

Do you do the action of the parenthesis first?
or
When you solve the first action in the parenthesis does it get rewritten like this

6 / 2 x 3 =

reply to post by IEtherianSoul9


The way it's written is deceiving...

Excuse me for the double post, didn't mean to.

Parenthesis, exponents, multiplication, division, addition, subtraction.
6/2(1+2) is 1.
6/2(3)
6/6
1

Wait... Google says that it is (6÷2) x (1+2).
Maybe this question is a matter of opinion?


This is killing me now, thanks... Especially now that my education is being insulted ):

reply to post by IpsissimusMagus

I've heard of the dumbing-down of American education, but dear God, what are they teaching in schools these days? Order of operations should be the first thing on the plate. There is no answer but 9. Now, understanding that 9 is the answer, figure out how that comes about and reject any other logic. And never use that logic again--for this problem or any other....

reply to post by IEtherianSoul9


I found this on facebook

Lots of people have differing opinions.

i hate math, i'll pass

reply to post by IpsissimusMagus


Yeah exactly...I'm actually looking this up and the answers are split evenly between 1 and 9.

What's causing the confusion is the "2(3)" part. Does multiplication by juxtaposition take precedence in a problem like this?

Originally posted by IpsissimusMagus
reply to post by satron

 

The debate depends on whether you rewrite the action after solving the parenthesis.

6 / 2 (1+2) =

do you rewrite it like this 6 / 2 ( 3 ) =

or like this 6 / 2 x 3 =

Does it matter?

Nope, it doesn't. The first thing you do with the parenthesis is to finish any operation inside it, and once it's down to number, the parenthesis can be treated like multiplication.

Originally posted by sam_inc
i hate math, i'll pass

I like your way of thinking.

Originally posted by Avalessa
Parenthesis, exponents, multiplication, division, addition, subtraction.
6/2(1+2) is 1.
6/2(3)
6/6
1

Wait... Google says that it is (6÷2) x (1+2).
Maybe this question is a matter of opinion?

edit on 1/7/12 by Avalessa because: (no reason given)

This is killing me now, thanks... Especially now that my education is being insulted ):

I'm gonna go with 9

2nd

Edit: and I am 100% sure of this

reply to post by Avalessa

This is killing me now, thanks... Especially now that my education is being insulted ):<

You're not alone there.

reply to post by satron


I understand how it works but it just doesn't look right to me to divide then multiply because it goes against PEMDAS.

reply to post by IpsissimusMagus


The parenthesis are done first (1+2) which equals 3.
Then, since there are no exponents you would move on to 6/2. Though in the acronym PEMDAS multiplication comes first, in the equation division comes first, and in any form of math when dealing only with division and multiplication you do the problem from left to right. Thus you are left with 6/2 (which is 3) times 3, which gives you an answer of 9.

God/Goddess gave me many talents...math is not one of them.

Des