6/2(1+2) = ?

Irish020 · May 5, 2011

So my brother and nephews are still arguing about the damn answer to this question!

astral · May 8, 2011

I just found this thread.... it has me laughing.

whippersnapper02 said: ↑

X2-9.

Wait. Is that a fraction or 6 divided by 2?
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^ lol. 6 divided by 2 is 3. 6/2 as a fraction is also 3.

tacokid09 said: ↑

calculator goes left to right im pretty sure. the dont follow PEMDAS rules
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Calculators dont follow the rules? lol

TeamSarcasm said: ↑

if you put it in as one big thing it will treat the 6/2 like a fraction, it you do one step at a time it does not we both win....?
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6/2 as a fraction is still 3 Think of it as six halves of something. One half (1/2) is half a burrito, six halves of burritos combined together make three whole burritos.

cntstan said: ↑

If that first part is a fraction (6/2) then the answer is 9. If the / symbol is meaning divide 2(1+2) by 6 then the answer is 1. So I guess it depends on the intentions of whoever wrote the problem. They should have just made it look like a normal fraction with a horizontal line but I can't figure out how to do that with my keyboard.
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You guys are killing me with these fractions. Fractions and division problems are the same thing. one quarter (1/4) is just a division problem waiting to be solved. That's why it can also be expressed as a decimal (.25)

topgun155 said: ↑

STFU TI-84 FTW
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Such a simple solution, but people don't believe it. THE CALCULATOR LIES!!!!! lol

tacokid09 said: ↑

Now wonder our economy sucks. More than half of us can't figure out a simple math problem
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haha

TeamSarcasm said: ↑

6/2 is not a fraction its 6 divided by 2 which means after your done in the () your distribute the 2 which gives you 6 and 6 divided by 6 is 1...ill take my own dam picture
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I'll fraction you!

I only got a third of the way through the thread and gave up...

9

astral · May 8, 2011

Someone probably quoted this already somewhere, but it explains why it is 9. Multiplication and division are on the same level and are completed simultaneously.

Mnemonics are often used to help students remember the rules, but the rules taught by the use of acronyms can be misleading. In the United States the acronym PEMDAS is common. It stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. If PEMDAS is followed without remembering to do multiplication and division at the same time and done instead with multplication then division students will get wrong answers. For example: 6÷2(1+2)=9 not 1. In other English speaking countries, Parentheses may be called Brackets, 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, leading to such acronyms as BEDMAS, BIMDAS, BODMAS, BOMDAS, BERDMAS, PERDMAS, PEMDAS, and BPODMAS.
These mnemonics may be misleading, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer.

The correct answer is 9, which is best understood by thinking of the problem as the sum of positive ten, negative three, and positive two.
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6/2(1+2) = ?

6/2(1+2) =

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Irish020 Well-Known Member

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astral On my second taco now....

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astral On my second taco now....

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6/2(1+2) = ?

6/2(1+2) =

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#521 Irish020 Well-Known Member

#522 astral On my second taco now....

#523 astral On my second taco now....

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#521
Irish020 Well-Known Member

#522
astral On my second taco now....

#523
astral On my second taco now....

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