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Started By
Message
re: What's the answer to this math problem?
Posted on 8/3/17 at 1:37 am to KosmoCramer
Posted on 8/3/17 at 1:37 am to KosmoCramer
PEMDAS
Parentheses is just for Grouping!
Evaluate what's INSIDE the parentheses first. There is only a number (3).
I will repeat because this is what causes the controversy in this expression. Evaluate what is INSIDE the parentheses first!
6^2 / 2(3) + 4
There is nothing but a number inside the parentheses so the first step is to rewrite the problem
6^2 / 2 * 3 + 4
Next is Exponents:
36 / 2 * 3 + 4
Next is Multiplication OR Division, whichever comes first left to right:
18 * 3 + 4
Still not done with Multiplication/Division
54 + 4
Finally do Addition OR Subtraction, whichever comes first, left to right:
58
Parentheses is just for Grouping!
Evaluate what's INSIDE the parentheses first. There is only a number (3).
I will repeat because this is what causes the controversy in this expression. Evaluate what is INSIDE the parentheses first!
6^2 / 2(3) + 4
There is nothing but a number inside the parentheses so the first step is to rewrite the problem
6^2 / 2 * 3 + 4
Next is Exponents:
36 / 2 * 3 + 4
Next is Multiplication OR Division, whichever comes first left to right:
18 * 3 + 4
Still not done with Multiplication/Division
54 + 4
Finally do Addition OR Subtraction, whichever comes first, left to right:
58
0
Posted on 8/3/17 at 1:53 am to KosmoCramer
This post was edited on 8/3/17 at 1:55 am
Posted on 8/3/17 at 5:28 am to GeorgeTheGreek
quote:
It's 10 and anyone saying otherwise is an ignorant ignoramus.
I was going to reply, "Oh my".
Then I realized that you are just being provocative. You actually know the expression simplifies to 58. Seriously, you do know it simplifies to 58, correct?
Posted on 8/3/17 at 6:14 am to KosmoCramer
58
Only the 2 is in the denominator. The 6^2 and 3 are both in the numerator.
6^2 = 36
36*3 = 108
108/2 = 54
54+4 = 58
58
If the problem was presented as 6^2/(2(3))+4, then the answer would be 10
Only the 2 is in the denominator. The 6^2 and 3 are both in the numerator.
6^2 = 36
36*3 = 108
108/2 = 54
54+4 = 58
58
If the problem was presented as 6^2/(2(3))+4, then the answer would be 10
Posted on 8/3/17 at 6:51 am to KosmoCramer
The real problem here is the lack of parenthesis and the use of the obelus. It is not used in technical formulas and is discouraged by ISO. The problem is written terribly.
That literally means the only time you'll ever run across this in real life is in 8th grade or earlier.
How many parents are trying to do their kids homework today on the OT?
That literally means the only time you'll ever run across this in real life is in 8th grade or earlier.
How many parents are trying to do their kids homework today on the OT?
Posted on 8/3/17 at 7:19 am to NYNolaguy1
quote:
The problem is written terribly.
It is intentionally written terribly so people can call each other dumbasses on social media.
Posted on 8/3/17 at 7:29 am to KosmoCramer
This thread just makes me wish most of you were dead or sterile. I cannot stand that you idiots might have kids. shite. Most of you are just polluting the gene pool.
EDIT: Also, if the stupid amongst you weren't around, traffic would be much better.
EDIT: Also, if the stupid amongst you weren't around, traffic would be much better.
This post was edited on 8/3/17 at 7:31 am
Posted on 8/3/17 at 7:50 am to NYNolaguy1
quote:
The problem is written terribly.
Is there a better way to write it? Sure.
Should you get any answer other than 58 regardless? No, you shouldn't.
It is written in such a way that it will confuse people who do not understand the order of operations, but no mathematician would have even the slightest bit of ambiguity answering this problem.
Posted on 8/3/17 at 8:15 am to slackster
quote:
but no mathematician would have even the slightest bit of ambiguity answering this problem.
No mathemetician would use the obelus...
Posted on 8/3/17 at 8:20 am to NYNolaguy1
I just read the first page and saw all the downvotes for the correct answer (58). The best was Breesus, who noted PEMDAS and then proceeded to do it incorrectly. Awesome. 
Posted on 8/3/17 at 8:23 am to CocomoLSU
58
Posted on 8/3/17 at 8:24 am to jsk020
Spot on...
Order of operations...
1) Parentheses (simplify inside 'em)
2) Exponents
3) Multiplication and Division (from left to right)
4) Addition and Subtraction (from left to right)
Since there is nothing to simplify inside the parentheses, you start at step 2.
Order of operations...
1) Parentheses (simplify inside 'em)
2) Exponents
3) Multiplication and Division (from left to right)
4) Addition and Subtraction (from left to right)
Since there is nothing to simplify inside the parentheses, you start at step 2.
Posted on 8/3/17 at 8:30 am to KosmoCramer
10
Posted on 8/3/17 at 8:40 am to slackster
quote:
Should you get any answer other than 58 regardless? No, you shouldn't.
I think its a shite problem with shite answers for shitty reasons...
With that said, why are we dividing before multiplying if we are using PEMDAS?
Posted on 8/3/17 at 8:57 am to NYNolaguy1
quote:
With that said, why are we dividing before multiplying if we are using PEMDAS?
: Banghead:
Posted on 8/3/17 at 8:59 am to NYNolaguy1
quote:
With that said, why are we dividing before multiplying if we are using PEMDAS?
Posted on 8/3/17 at 9:01 am to KosmoCramer
How in the frick did this make 12 pages???
Posted on 8/3/17 at 9:03 am to NYNolaguy1
quote:
With that said, why are we dividing before multiplying if we are using PEMDAS?
“Think of how stupid the average person is, and realize half of them are stupider than that.”
- George Carlin
This post was edited on 8/3/17 at 9:04 am
Posted on 8/3/17 at 9:03 am to monkeybutt
quote:
Thats dumb.
Explain it to me then...
Posted on 8/3/17 at 9:04 am to MaleB
quote:
“Think of how stupid the average person is, and realize half of them are stupider than that.”
- George Carlin
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