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Math: 6÷2(1+2) = ?
Ms Sans Serif
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[quote:Anonymous Coward 32057798:MV8xNDczMDcwXzM1NTgyMTM0XzU0RjFEQ0Iz] [quote:WD:MV8xNDczMDcwXzM1NTc4NjEzXzEwMDE0QUEy] It seems that each student interpreted the problem differently, resulting in two different answers. Student 1 performed the operation of addition first, then multiplication; whereas student 2 performed multiplication first, then addition. When performing arithmetic operations there can be only one correct answer. We need a set of rules in order to avoid this kind of confusion. Mathematicians have devised a standard order of operations for calculations involving more than one arithmetic operation. [b]Rule 1: First perform any calculations inside parentheses. Rule 2: Next perform all multiplications and divisions, working from left to right. Rule 3: Lastly, perform all additions and subtractions, working from left to right[/b]. The above problem was solved correctly by Student 2 since she followed Rules 2 and 3. Let's look at some examples of solving arithmetic expressions using these rules. -------------------------------------------------------------------------------- [/quote] "Inside Parentheses" is what they first teach elementary school children. You learn how to really handle parentheses when you get older, by Distribution: "We use the distributive property to help us find a way around the order of operations while still being sure that we keep the value of the expression." http://en.wikibooks.org/wiki/Basic_Algebra/Working_with_Numbers/Distributive_Property Distribute BEFORE "pedmas" AND use with numbers, possible used to REMOVE parentheses too. http://www.algebra.com/algebra/homework/word/Linear_Equations_And_Systems_Word_Problems.faq.question.49847.html Get Rid of parentheses with Distribution: http://www.helpalgebra.com/articles/gettingridofparentheses.htm If there is some factor multiplying the parentheses, then the only way to get rid of the parentheses is to multiply using the distributive law. http://www.jamesbrennan.org/algebra/intro%20to%20algebra/simplifying_algebraic_expression.htm [/quote]
Alright, there's a lot of self-proclaimed experts around these parts. Let's see how your logic holds up against some basic mathematics.
6÷2(1+2) = ?
I'll give two hints. This is
a trick question, and there is only
All tools used for computation are fair game.
(Yes, I saw this somewhere else and decided to post it here.)
Best of luck to all you geniuses .
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