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re: This math problem is clearly only for geniuses...
Posted on 2/24/16 at 9:41 am to tigerbutt
Posted on 2/24/16 at 9:41 am to tigerbutt
quote:Not exactly true
PEMDAS
It stands for Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction. In that order.
It really is
1.Parentheses
2. Expnonents
Tie for 3, go left to right. Multiplication and Division
Tie for 5, go left to right. Addition and subtraction
Not saying you didnt know this, but a while back a problem came up and people were swearing multiplication took precedence over division
Posted on 2/24/16 at 9:49 am to lsupride87
quote:
Tie for 3, go left to right. Multiplication and Division
Tie for 5, go left to right. Addition and subtraction
Not saying you didnt know this, but a while back a problem came up and people were swearing multiplication took precedence over
I don't remember anyone thinking multiplication should go before division or addition before subtraction. It was the left to right rule that was in question. I've never been taught that and have a pretty extensive math background. On that other problem I see it both ways and think that problem is ambiguous. I don't think equations should be looked at as sentences reading left to right. If they were, it would be fricking retarded to write this current problem as is. Why would you not move the 3x0 to the front and not even have to worry about PEMDAS. Just answer the whole thing left to right. The other problem lacked punctuation to differentiate between doing multiplication and division first (in my opinion since I don't use left to right often). This one doesn't even bring up that issue.
Posted on 2/24/16 at 9:50 am to lsupride87
quote:It actually doesn't matter if you do multiplication or division first. There's no reason to go left to right--you can go right to left if you want, or mix it up. It's completely arbitrary.
Not exactly true
It really is
1.Parentheses
2. Expnonents
Tie for 3, go left to right. Multiplication and Division
Tie for 5, go left to right. Addition and subtraction
Not saying you didnt know this, but a while back a problem came up and people were swearing multiplication took precedence over division
5x10/2 gives you the same answer no matter which order you do the multiplication/division.
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