Basic math.. Who knows it?
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9 - 5 + 5 x 0 + 3 =
PEMDAS
9 - 5 + 0 + 3
9 +(-5) + 3
9 - 2
7
i'm pretty sure that's right.0 -
70
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30
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Seven....my lucky number0
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Jorra - that is the explanation I was looking for. Thanks!0
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Please restore my faith in humanity...
I know the thing says "comment with your answer only" but I would like that to say "show your work!"
Remember elementary and middle school?
(i apologize if i have brought back repressed memories of creepy math teachers)
Multiply 5*0 first = 0.
9 - 5 +0 +3 = 7
And thank you for this. Today I was stunned when I handed someone $11 cash for a food order that was $10.90. She had to use the calculator to figure out my change. :noway:0 -
7
But "maths" should be "math."
Thanks for asking!
It's actually called "maths" in Great Britain. I thought it was weird at first too.
Former math teacher here. It's 7.
Maths, as in "mathematics". We in North America actually are the ones butchering it! Now the big question, what is the derivative of y=9-5+5*0+3?
y = 7
hence, y' = 0
Furthermore, int(y) = 7x + C, where C is the arbitrary constant of integration...
Ha ha, ding ding ding! We have a winner. Please come to the front of the room to collect your gold star.
I have a M.S. in pure math. If I don't know my derivatives and the fundamental theorem of calculus while sleeping, you can come smack me in the face.0 -
I follow PEMDAS -- There is no P,E, or D. There are only M, A, and S. Please forgive the formatting...
9-5+5x0+3
M 5x0 = 0
9-5+0+3
A(1) 5+0 = 5
9-5+3
A(2) 5+3 = 8
9-8
S 9-8 = 1
1
The people who are getting 7 seem to be implying parentheses around the pairs in order from left to right -- I don't remember that rule from math. I see it more as "9-((5+(5x0))+3)". The people getting 3 are going strict left to right. Like a lot of people answering, I was not a math major, but I would like an explanation as to why I am wrong. In any case, I'm an IT systems analyst and I rely on my developers to 'check the math' in my requirements based on what we're trying to accomplish.
The thing that's tricky about PEMDAS is that Addition and Subtraction are on equal standing. When you have both, you do them left to right. (The same is true for multiplication and division.)
Source: I'm a math and science teacher.
Jorra - that was the explanation I was looking for. Thanks!0 -
If you use simple math like you learn in elementary school, there is no negative numbers. it would go 9 - 5 = 4 + 5 = 9 X 0 = 0 + 3 = 3. This is why my first anwser was 3. Hmmm0
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any thing times 0 is 0.
THANK YOU!!!!!0 -
If you use simple math like you learn in elementary school, there is no negative numbers. it would go 9 - 5 = 4 + 5 = 9 X 0 = 0 + 3 = 3. This is why my first anwser was 3. Hmmm
You have to multiply first before you add. This is why this approach is incorrect. Order of operations. See explainations by Jorra and the OP above.0 -
"These pretzels are makin me thirsty!!"
I'm bad at math...unless there's a shoe sale :bigsmile:0 -
If you use simple math like you learn in elementary school, there is no negative numbers. it would go 9 - 5 = 4 + 5 = 9 X 0 = 0 + 3 = 3. This is why my first anwser was 3. Hmmm
3 would be fine, if the problem read (9-5+5) x 0 + 3
but order of operations means you have to do the problem 9 - 5 + (5 x 0) + 30 -
9-5+5x0+3=
Showing my work...that would be 9-5=4....4+5=9...x0=0....+3 = 3
My answer is 3....
I'm an elementary teacher and if I can't do this one it means I have been away from teaching math for too too long....Now if you would have thrown some parenthesis in there...I might would have to call up my colleague to walk me throught...lol....0 -
7...My Dear Aunt Sally.....0
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Please Excuse My Dear Aunt Sally. In order: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction. I only see Subtraction, Multiplication, and Addition. First do the multiplying, then the adding, then the subtracting.
It's BEDMAS: brackets (or parenthesis if you've learned it like that), exponents, divison and multiplication in the order in which they appear, and then addition and subtraction IN THE ORDER IN WHICH THEY APPEAR. The answer is 7.0 -
Please restore my faith in humanity...
I know the thing says "comment with your answer only" but I would like that to say "show your work!"
Remember elementary and middle school?
(i apologize if i have brought back repressed memories of creepy math teachers)
Multiply 5*0 first = 0.
9 - 5 +0 +3 = 7
And thank you for this. Today I was stunned when I handed someone $11 cash for a food order that was $10.90. She had to use the calculator to figure out my change. :noway:
Ha. I handed a cashier 3.02 for a 2.57 sale and she looked at me and said "2 cents, that's it?".0 -
Huh - 70
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70
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paranthesis, exponents, multiply or divide, add or subtract.
please excuse my dear aunt sally. lol0
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