MarshallPope
Well-Known Member
Are we sure? 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0
PEMDAS
1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+0
10-6
=4
At least that's what I get...
PEMDAS
1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+0
10-6
=4
At least that's what I get...
Please Excuse My Dear Aunt Sally....PEMDAS...
As demonstrated by the responses here, it's actually rather easy to fathom a wrong answer. It's a bad question.... and can't fathom how people get the answer wrong.
Are we sure? 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0
PEMDAS
1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+0
10-6
=4
At least that's what I get...
Adding brackets to highlight the order of operation may help:
(1+1+1+1+1+1+1+1+1)+(1-1)+(1+1+1+1+1)+(1x0)
= 9 + 0 + 5 + 0
= 9 + 5
= 14
Do they teach order of operations any more?
Adding brackets to highlight the order of operation may help:
(1+1+1+1+1+1+1+1+1)+(1-1)+(1+1+1+1+1)+(1x0)
= 9 + 0 + 5 + 0
= 9 + 5
= 14
Do they teach order of operations any more?
The correct answer is clearly 14. The questions is:
"What is the answer? 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0 "
The correct answer is clearly 14. The questions is:
"What is the answer? 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0 "
I've used RPN calculators, and I hated it. My mom (a former accountant) loves it.
I've found another reason for geometry. I'm in Intro to Engineering Design and currently we are working on different shapes and measurements. (Triangles, Octagons, Rhombus, etc..) and during lunch, I need to go talk to my geometry teacher abut a few of the questions. Things that we work on later in the year in geometry.
Are we sure? 1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+1x0
PEMDAS
1+1+1+1+1+1+1+1+1+1-1+1+1+1+1+1+0
10-6
=4
At least that's what I get...
Adding and Subtracting are the same thing, thus there is no implied first operation, basically you dont do all of one type first then the other.
Which is why when I took my PE exam you had to show all your work even if you already knew the answer or shortcuts. There were several times I actually had to go back and and fill in some of the steps from what I normally did.Under no circumstances should you have to write an explanation of process.
Which is why when I took my PE exam you had to show all your work even if you already knew the answer or shortcuts. There were several times I actually had to go back and and fill in some of the steps from what I normally did.
As already stated, the point was showing that you could not just get the right answer but more importantly that you actually understood the underlying concepts, thus showing that you might be able to apply those same concepts to other problems.
The reason the thread took this turn was my example of an elementary school state test. There was no work to show, it asked to list three fractions in order, smallest to largest. Then they wanted the process to be explained. I did it one way and the test example did it another. Both were sound methods but when I asked if my answer would be marked wrong because I did it differently the answer was,"I would hope not." If the answer isn't yes or no then the test is flawed.So, would you admit that the above example was not higher math, but elementary math? Even still, by showing work we were able to (through different means) show how to obtain the correct answer. Showing work, even on basic math, is an element of problem solving, to verify a correct answer. If there were no need for showing how to do the math, then how would a teacher be able to know if the student misunderstood the concept or made a clerical error?
Showing your work for math problems and knowing your times tables should be taught as an exercise of good practice. By learning that discipline at an early age, students will have a solid foundation as they get older and into more advanced subjects. I would liken this to a musician learning their scales. There are many self taught musicians who do not practice their scales, or never learned them, but you will not find very many playing in a major symphony orchestra.
Let me ask a question. You are taking a math test, and they do exist on job apps, they ask you to figure the total for 6 tickets at $17.50 per ticket without a calculator. Many would just multiply it out, I prefer to make it an easy number to work with. I add 17.5 to itself to get 35 and triple it, $105.00. That is done in seconds in my head but I think it be wrong a state test.
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