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POLL: A simple mathematical problerm
 
Vegetta  posted on Apr 08, 2011 11:48:52 PM - Report post

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Let's see...
48/2*(9+3)
48/2*12
24*12
288

Order of operation for those who want to check.
1. First do all operations that lie inside parentheses.
2. Next, do any work with exponents or radicals.
3. Working from left to right, do all multiplication and division.
4. Finally, working from left to right, do all addition and subtraction.
Link
Link

 
Night-Ghost  posted on Apr 09, 2011 12:30:08 AM - Report post

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quote:
originally posted by Latiosmaster47

The order of operations says:

Parentheses - Exponents - Multiplication - Division - Addition - Subtraction

With the priority going from left to right.

By that logic, the problem should go like this:

48÷2(9+3)

48÷2(12) the parenthesis go first, naturally.

48÷24 Next comes multiplication, between the 2 and the 12.

2 Being that there is only one action left, the answer is two.

The trouble with this particular problem is that multiplication and division (like addition and subtraction) are often given the same priority status. The answer you come up with depends on what version of the order of operations your algebra teacher taught you in high school.

Exactly. Our teacher told us back in the 8th grade or 7th (i'm not sure), that Multip. and division both have the same power (Along side with subtraction and addition). And if you end up with both of them go from left to the right and what ever is first, do it first. So i'd go with 288.

[Edited by Night-Ghost, 4/9/2011 12:31:17 AM]

 
Shibby  posted on Apr 09, 2011 12:31:47 AM - Report post

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quote:
originally posted by Skyheart

Throwing my vote in with 288. Good old BODMAS (our English version or the order - Brackets Over Division, Multiplication, Addition and Subtraction).

When you hear hoofbeats, don't think Zebra.

EDIT: Fixed :P

[Edited by moderator DABhand, 4/8/2011 9:18:08 PM]

We have a similar thing here, BEDMAS, Brackets > Exponents > Division/Multiplication > Addition/Subtraction

 
drpepperfanatic  posted on Apr 09, 2011 1:02:20 AM - Report post

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I get 2 according to the PEMDAS rule.
 
Rise_Against  posted on Apr 09, 2011 1:37:11 AM - Report post

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I just realized that 2(9+3) should go first as DABhand said. So it would be everything in that bracket multiplied by 2 and then 48 divided by that answer. So the correct answer should be 2.
 
HonestGamer  posted on Apr 09, 2011 1:55:17 AM - Report post

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quote:
originally posted by latios_power

My theory in maths questions is that the higher number is more accurate.

That drove me hysterical.

According to BODMAS, brackets open first, division second, followed by multiplication, addition and substraction.

So 48/2(9+3)
= 48/2*12
= 24*12
= 288

 
king-of-games  posted on Apr 09, 2011 2:14:50 AM - Report post

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Its been a while since I did maths, but Google reckons the answer is 288.
 
Al-pucino  posted on Apr 09, 2011 2:15:38 AM - Report post

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quote:
originally posted by Rise_Against

I just realized that 2(9+3) should go first as DABhand said. So it would be everything in that bracket multiplied by 2 and then 48 divided by that answer. So the correct answer should be 2.

Exactly what I thought.

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