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Originally posted by Whatsreal
Originally posted by ASeeker343
Originally posted by Whatsreal
wow!!
how many ATSers does it take to do a simple math problem...
I was a Math teacher for 8th grade algebra...
PEMDAS
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
6 / 2(1+2)
1+2 = 3
2*3= 6
6/6 = 1
Seriously, my heart is broken that this has required an entire thread. This is why America is weak.
Why did you multiply before you divided? That action is inserting parenthesis that arent there. The division should be done first.
NO!!!! you get an F for today... I am a certified math teacher.. I'm not inserting parenthesis that aren't there as there are already there...
and PEMDAS... M before D.. multiple before divide... THINK BEFORE YOU SPEAK. Don't speak if you don't know.... man... no wonder the rest of the world laughs at us... kids in elementary school know this in most european countries.
MULTIPLY BEFORE DIVIDE... got it?
Originally posted by Whatsreal
Originally posted by ASeeker343
Originally posted by Whatsreal
wow!!
how many ATSers does it take to do a simple math problem...
I was a Math teacher for 8th grade algebra...
PEMDAS
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
6 / 2(1+2)
1+2 = 3
2*3= 6
6/6 = 1
Seriously, my heart is broken that this has required an entire thread. This is why America is weak.
Why did you multiply before you divided? That action is inserting parenthesis that arent there. The division should be done first.
NO!!!! you get an F for today... I am a certified math teacher.. I'm not inserting parenthesis that aren't there as they are already there...
and PEMDAS... M before D.. multiple before divide... THINK BEFORE YOU SPEAK. Don't speak if you don't know.... man... no wonder the rest of the world laughs at us... kids in elementary school know this in most european countries.
MULTIPLY BEFORE DIVIDE... got it?edit on 1-5-2011 by Whatsreal because: had to fix grammer
Originally posted by ASeeker343
6÷2(1+2)
6÷2(3)
6÷2*3
3*3=9
facepalm
Originally posted by ASeeker343
The above multiplication is implied by the parentheses. a(b) = a*b
The parentheses do not imply that the multiplication must be performed first.
Originally posted by Karmatic
I tried 2 different calculators. My Casio scientific says 1. My TI 86 graphing says 9. I concede that this problem is indeed written poorly and judging by the 7 pages of discussion, definitely open to interpretation.
Originally posted by JackyMenace
You guys are making me lol all over the place.
www.mathsisfun.com...
Originally posted by JackyMenace
You guys are making me lol all over the place.
www.mathsisfun.com...
edit-Teacher guy, I don't like the way you talk down to people. I had teachers like you and they were usually wrong and were just plain mean to students to make then drop the subject and accept bull. This isn't your elementary class.edit on 2-5-2011 by JackyMenace because: fun
Originally posted by Whatsreal
reply to post by Earthscum
calculators do not speak algebra! Algebra was invented as a way for humans to communicate with more complex numbers.... computer chips speak in 1s and 0s...
that said..
I used wolfram software to help me as I was learning Calc 1,2 and 3.... guess what... half the time it was wrong because it doesn't do algebra well.. I had to enter in bits of the equations i needed in pieces so that the order of operations was followed and other laws, like the distributive law were followed properly.
I don't know why they don't work right (calculators and software) but I assure you I am right....
and to the guy who said his 16 core comptuer is right and I'm not.... trying using the single core above your shoulders
Originally posted by Earthscum
Originally posted by Karmatic
I tried 2 different calculators. My Casio scientific says 1. My TI 86 graphing says 9. I concede that this problem is indeed written poorly and judging by the 7 pages of discussion, definitely open to interpretation.
Star for you.
There's a big difference between 6÷(2(1+2) ) and (6÷2)(1+2). None of the calcs I tried came up with 1. They all did brackets first, then the equation in line (6÷2x3). The way I learned math was to do all the math in line as it's written if there's no brackets, just like reading left to right. I had it also explained to me that is bad form to write problems like that because of just this type of situation.
Originally posted by ASeeker343
However, scientific calculators are programed to properly interpret order of operations especially in cases like this. Thus if i enter this into my calculator i get 9. In order to get 1 i need an extra set of parentheses 6÷(2(1+2)) which are incorrect.
__6__
(2(1+2))
Originally posted by Honor93
Originally posted by ASeeker343
However, scientific calculators are programed to properly interpret order of operations especially in cases like this. Thus if i enter this into my calculator i get 9. In order to get 1 i need an extra set of parentheses 6÷(2(1+2)) which are incorrect.
hahahahahahaha, thanks for that ... but i gotta ask, really?
as you state above, in order for the calculator to perform correctly, you have to add parenthesis ... even though the equation, as written, explicitly gives the order to multiply simply by rule of juxtaposition (or by placing the integer 2 directly next to the parenthesis) ... apparently, this is common knowledge by most except some teachers and most programmers ... understandable, many of both attended school alongside me.
Originally posted by MallardDuck
reply to post by ASeeker343
Either you're tolling or don't understand math.
The division symbol is as good as saying:
__6__
(2(1+2))
To solve fractions you have to solve the denominator first.
Originally posted by ASeeker343
reply to post by Honor93
The youtube link has this same problem with different numbers. If you cant follow it and substitute the numbers from the OP's problem in for yourself you probably shouldnt be participating. Ill break it down for you tho anyway.
In the video:
48÷2(9+3)
48=a
2=b
9=c
3=d
a÷b(c+d)
now the OPs numbers...
6=a
2=b
1=c
2=d
6÷2(1+2)
Same concept, same process. Answer is 9
if that doesnt clear it up for ya then i dont know what to tell ya
Edit: and if you are referring to the other link, that was just to illustrate that multiplication and division are performed left to right at the same time... before any addition and subtractionedit on 2-5-2011 by ASeeker343 because: clarification