Re: Please help me with this math problem.... (teachers? anyone?)
480?
Edited to explain: PEMDAS! First you do inside the parentheses, then the exponent, then you multiply and divide (in whatever order those two naturally occur in the problem), then add and subtract.
Snowflake08
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by DavaDay
480?
that is what i thought
siffleuse319
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Is it 480 or have I totally forgotten how to do basic math (which is altogether possible!!!)
irishgrl1017
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
4 x120 So 480 I say??
JeanetteandSteve
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
i got 1/3 or .33333333
heatherann109
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
i got 480 too
DavaDay
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Enough with the suspense, Bon! Are we smarties or what?
DavaDay
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Who knew 'Please Excuse My Dear Aunt Sally' would ever come in handy again in our lives?
Snick n Nick
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Let's see, so PEMDAS.....so....
100 / 5^2 * (70+50)
100 / 5^2 * (120)
100 / 25 * (120)
100 / 3000
1/30
??? do you do the addition inside the parentheses at the P stage or the A stage? I think the P....but I'm really not sure!!
Edit: Oh are the M and the D interchangeable?? damn it's been a long time...in that case I agree that it's 480....!
MrsD71208
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by beachbum05
Ok, so I REFUSE to believe that this test has the right answer....
It's an order of operations problem...
(I'm not giving you any of the choices )
OKAY, I'm far from a Math person, but I do remember PEMDAS which is parenthesis, exponents, multiplication, division, addition and subtraction. That means you'd have to do the 70+50 which is 120 on the right of the X
5 squared equals 25
100/25= 4
So............... 4X120= 480
Is that right? lol I just had a flashback to HS!
JeanetteandSteve
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
if you're going by PEMDAS don't you have to multiply first? so you have to do 25 x 120 before you can do 100 divided by 25...or am i wrong?
beachbum05
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Please excuse my dear aunt sallie
JeanetteandSteve
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by Snick n Nick
Let's see, so PEMDAS.....so....
100 / 5^2 * (70+50)
100 / 5^2 * (120)
100 / 25 * (120)
100 / 3000
1/30
??? do you do the addition inside the parentheses at the P stage or the A stage? I think the P....but I'm really not sure!!
i think you're right...i was off by a hundredth...i think it is 1/30
beachbum05
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by JeanetteandSteve
if you're going by PEMDAS don't you have to multiply first? so you have to do 25 x 120 before you can do 100 divided by 25...or am i wrong?
And that my friend is why I got 1/30 instead of 480.
Totally forgot that you go in the order of what is in the problem - not literally by PEMDAS
siffleuse319
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Or...if they're not looking for the solution but only a way to simplify the equation...it could be 4X 120
DavaDay
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Never mind
JeanetteandSteve
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by beachbum05
Posted by JeanetteandSteve
if you're going by PEMDAS don't you have to multiply first? so you have to do 25 x 120 before you can do 100 divided by 25...or am i wrong?
And that my friend is why I got 1/30 instead of 480.
Totally forgot that you go in the order of what is in the problem - not literally by PEMDAS
dangit!! lol...and i used to love math!!
DavaDay
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by beachbum05
Posted by JeanetteandSteve
if you're going by PEMDAS don't you have to multiply first? so you have to do 25 x 120 before you can do 100 divided by 25...or am i wrong?
And that my friend is why I got 1/30 instead of 480.
Totally forgot that you go in the order of what is in the problem - not literally by PEMDAS
Right, I'm flashing back to 8th grade: the M and D are interchangeable, as are the A and S. You do whichever one of the two comes first for each.
beachbum05
Posted:
Member since
Re: Please help me with this math problem.... (teachers? anyone?)
Posted by DavaDay
hmmm... at second look, I thought maybe you could write the problem out as:
100 ______
5squared(70+50)
Which would give you:
100 _____
3000, or 1/3, as someone above suggested. But on second look, you can't: the 5squared x (70+50) is not in parentheses, so you can't separate it. Does that help?
1/30 - but yeah. I totally forgot the Left-to-right thing when you get to mult/divide
