48÷2(9+3) = ??? -- VOTE!! Poll Added

[Pine Tar]

So this is kind of like this
108÷.5 = 216 and not 54
this was actually on a Machinist test once and most got it wrong :shock:

 

[alexs64]

So this is kind of like this
108÷.5 = 216 and not 54
this was actually on a Machinist test once and most got it wrong :shock:

Why does it look like you are missing something from that equation? Why wouldn't that =54?

 

[ffgameman]

So this is kind of like this
108÷.5 = 216 and not 54
this was actually on a Machinist test once and most got it wrong :shock:

Why does it look like you are missing something from that equation? Why wouldn't that =54?

108 / .5, or effectively 108 X 2.

If it was 108 X .5, it would be 54.

 

[rehmus]

So this is kind of like this
108÷.5 = 216 and not 54
this was actually on a Machinist test once and most got it wrong :shock:

Why does it look like you are missing something from that equation? Why wouldn't that =54?

because 108/2 = 54.

Dividing by 0.5 is the same as multiplying by 2.

 

[alexs64]

So this is kind of like this
108÷.5 = 216 and not 54
this was actually on a Machinist test once and most got it wrong :shock:

Why does it look like you are missing something from that equation? Why wouldn't that =54?

because 108/2 = 54.

Dividing by 0.5 is the same as multiplying by 2.

NOW I see why he missed it....I would have to, because of not reading it correctly!! I am a ******* sometimes. LOL

 

[mudflap02]

nerds

 

[blitzerlover]

Wolfram says 288.

http://www.wolframalpha.com/input/?i=48%2F2+%289%2B3%29

 

[Zan]

PEMDAS folks

 

[predatorkj]

Great thread. And no, I'm not being a smart ass. I really enjoy math so seeing a debate like this here is pretty interesting. In any case, I just got out of some math courses and the way we were taught to do things like this was to completely clear out the parentheses and then do any left over multiplication or division(in left to right fashion). Now I come up with 2 but that was because I didn't leave the right side of the problem alone until that parentheses was gone. I then used a graphing calculator and came up with 288. I am assuming the calculator is correct but what I wanted to point out was that some college professors teach you steps that get you the answer 2 and not necessarily the answer 288. I had several problems for homework that when I did them the books way or got the answer from a calculator, they were completely different than if I did it the way the professor wanted. I pointed this out and never got much more than a "just do it the way you were showed in class".

 

[UMich92]

My math degree says 288. Multiplication and division are equals in order of operations as are addition and substraction. Division is multiplication of an inverse and subtraction is addition of a negative.

The formula 48÷2(9+3) can be rewritten as 48x(1/2)(9+3) by substituting x(1/2) for ÷2. And 48 x 0.5 x 12 = 288.

 

[KC37]

http://knowyourmeme.com/memes/48293

this pretty much tells you all you need to know.

if you believe in implied multiplication, as many of us do, then it is 2. if you believe in sticking strictly to PEMDAS then it is 188.

ultimately, no self respecting math teacher would ever ask this problem to be answered in seriousness as it is lacking a set of parentheses.

exactly.

I didn't click on the link, but teaching middle school math, I teach them to use PEMDAS, so they should get 288. If I wanted the answer of 2, I'd use a fraction bar instead of the divided sign, and have 2(9+3) as a denominator.

 

[rehmus]

http://knowyourmeme.com/memes/48293

this pretty much tells you all you need to know.

if you believe in implied multiplication, as many of us do, then it is 2. if you believe in sticking strictly to PEMDAS then it is 188.

ultimately, no self respecting math teacher would ever ask this problem to be answered in seriousness as it is lacking a set of parentheses.

exactly.

I didn't click on the link, but teaching middle school math, I teach them to use PEMDAS, so they should get 288. If I wanted the answer of 2, I'd use a fraction bar instead of the divided sign, and have 2(9+3) as a denominator.

click the link and learn.

 

[smapdi]

This should work on either calculator and will show what you're all missing.

Type in 24
Multiply by 100
Add 17
Multiply by 12
Divide by 0.5

Then turn the calculator upside-down.

 

[TBTwinsFan]

48÷2(9+3) = ???

(9+3) = (12)

48÷2=24

24(12) or 24 x 12 = 288


Obviously, I used Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction (PEMDAS) but that was the way that I was taught.

MATH IS AWESOME!

 

[tonsofcommons]

EPIC!

[youtube:33m3y5ur]http://www.youtube.com/watch?v=bwpWw-iVKHc&feature=player_embedded[/youtube:33m3y5ur]

 

[thefatguy]

I thought you did inside the brackets then what was touching the brackets, then everything else (BEDMAS)
So
48/2(12)
48/24
2

 

[ffgameman]

I thought you did inside the brackets then what was touching the brackets, then everything else (BEDMAS)
So
48/2(12)
48/24
2

My thoughts exactly - parentheses and anything beside the parentheses.

 

[TomMurry]

Even after my initial post with the answer being 2, I have the final answer folks...

I just talked to the professor of biometrics at UNC (I graduated with him from HS)

Here was his reply (after he laughed)

Anyone older than 25 should get the answer of 2 if they paid attention in math, because originally, PEMDAS was taught that you used each attribute, not right to left, but in the order they appear in the anagram. Multiply before Divide, Add before Subtract, no matter how it falls or in what part of the equation.

Sometime around 1999-2000, teachers started teaching the "associated type applied mathematics" where similar types of operations were grouped but used right to left, in that case, Multiply and Divide have no power over the other, only in the order where they appear in the equation. If M is first, you M, if D is first, you D. Same with Add and Subtract.

So, there you have it. Most people 25 or older will answer 2
Most people under 25 will answer 288.

If we are using the "new" applied mathematics, the correct answer is 288.

 

[thefatguy]

I thought you did inside the brackets then what was touching the brackets, then everything else (BEDMAS)
So
48/2(12)
48/24
2

My thoughts exactly - parentheses and anything beside the parentheses.

you dont have half of 48, you have 2 times whats in the brackets...

Technically, what is outside the brackets is multiplied to the 9 and the 3, making those 18+6 = 24
48/24 = 2


12 ÷ 2 × (8 ÷ 2) = 24
12 / 2(8/2) = 1.5

 

[George_Calfas]

My math degree says 288. Multiplication and division are equals in order of operations as are addition and substraction. Division is multiplication of an inverse and subtraction is addition of a negative.

The formula 48÷2(9+3) can be rewritten as 48x(1/2)(9+3) by substituting x(1/2) for ÷2. And 48 x 0.5 x 12 = 288.

Not sure how it get much simpler than this. Always best to make everything all add or multiply, thus cutting out all of the 5th grade math jargon.