off topic....math problem

[GreenDoberman]

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The Ultimate Professional



Join Date: Jan 2005
Location: Mason-Dixon Line
Posts: 4,305


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No Guess......I Couldn't.........
<HR style="COLOR: #fdde82" SIZE=1><!-- / icon and title --><!-- message -->While I was in The ICU Waiting Room...for my mom..............My Cousin who is Home Schooled.........had a few math problems....21 in all, and that last one had me "Stumped!"


Thanks For The Answer.........I'll Tell Him it's 1/4 Sq Feet, but The Only Problem Is.......He Has To Show How He Got The Answer.



Green Dob....Any Help W/ That Would Be Much Appreciated!



Thanks Again
-MR. NW-
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First thing you want to do is reduce the second fraction. Since both 81 and 144 are divisible by 9 you divide the numerator and the denominator by 9.

81/9= 9 and 144/9=16,

Now your problem looks much simpler at 4/9 of 9/16. Both the 9's cancel each other out (ask for the multiplicative property, I can't remember it) and you have 4/16. Divide numerator and denominator by 4 and you get 1/4.

The point of most math problems is to reduce them to numbers less than 12. That is why we only learned our times tables up to 12 X 12.

 

[TheShotDoctor]

Ok....got The First One!

Thanks, but he just called and now has another one!





HELP:


A Line is 45/64 Inches long, find the length of a line 4/5 as long.

Again...please show the work!


Thanks
-MR. NW-

 

[tenman]

This is when we need a telestrator

 

[tenman]

Thanks, but he just called and now has another one!





HELP:


A Line is 45/64 Inches long, find the length of a line 4/5 as long.

Again...please show the work!


Thanks
-MR. NW-

That should be done the same way as the other:

45/64 x 4/5 = cancel the 5 into 45 and the 4 into 64 = 9/16

 

[GreenDoberman]

Let me show you a shortcut:

Take the 45/64 and ignore the 64.

Now figure 4/5 of 45.

That would be 45/5 X 4 or 36.

Now put the 36 on top of the 64.

Find the greatest common denominator (4). Divide both by it.

You get your answer 9/16.

Ask him what chapter of the math book this is. I suspect it deals with reducing fractions using greatest and least common denominators.

 

[goodcall]

45/64 = (9*5)/(8*8)

so you have (9*5)/(8*8)*4/5 (write it down in real fraction form to visualize it better)

the 5's cancel out, and you can cross out the 4 if you make one of the 8's a 2, because you're dividing both by 4

that leaves you with 9/(8*2), or 9/16

 

[sunnyblue100]

:think2: you guys are all joking around, right?

 

[goodcall]

:think2: you guys are all joking around, right?

Yeah...TNP had the actual answer in post #5:thumbsup:

 

[tenman]

Let me show you a shortcut:

Take the 45/64 and ignore the 64.

Now figure 4/5 of 45.

That would be 45/5 X 4 or 36.

Now put the 36 on top of the 64.

Find the greatest common denominator (4). Divide both by it.

You get your answer 9/16.

Ask him what chapter of the math book this is. I suspect it deals with reducing fractions using greatest and least common denominators.

It was always easier for me to cancel out when I was a kid, because "finding the least common denominator" to me would be used in the addition or subtraction of fractions, but I follow what you are saying by reducing the fraction first.

 

[festeringZit]

I don't mean to be rude. But this shit proves the dumbing down
of American students.

These problems would have been a piece of cake to *any*
high school graduate 20-30 years ago.

My grandmother's high school math text books are harder than
most 1st and 2nd year college math courses nowadays.

These problems should be a piece of cake for any 8th grader.

 

[sunnyblue100]

I don't mean to be rude. But this shit proves the dumbing down
of American students.

These problems would have been a piece of cake to *any*
high school graduate 20-30 years ago.

My grandmother's high school math text books are harder than
most 1st and 2nd year college math courses nowadays.

kinda agree, thanks to the calculator and computer:missingte

 

[Trapstar]

Someone's not smarter than a 5th grader!!! :WTF:

 

[texansfan]

How in the hell is he learning anything with you giving him the answers? Maybe the home schooling isn't working 2 well.

 

[TheShotDoctor]

Not Trying To ? Anyone.......b/c I'm Not Good w/ Fractions, BUT....

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Join Date: Jan 2005
Location: Mason-Dixon Line
Posts: 4,308


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Ok....got The First One!
<HR style="COLOR: #fdde82" SIZE=1><!-- / icon and title --><!-- message -->Thanks, but he just called and now has another one!





HELP:


A Line is 45/64 Inches long, find the length of a line 4/5 as long.

Again...please show the work!



</TD></TR></TBODY></TABLE>


He's not trying to find what 4/5 of 45/64 equals......He's trying to find The LENGTH Of The 2nd Line...!



Are You Sure It's 9/16..???



Just Not Getting It...
MR. NW

 

[Romanowski]

lol 4/5ths of 45/64 is the second line

so yes 9/16

damn dude

 

[GreenDoberman]

They are one and the same, Mr. N.

 

[bellyputter]

Kids that are home schooled, have a 37% better chance of winning the lottery.

 

[TheShotDoctor]

Ok Guys.......

Thanks Again........I Get It Now...!



He's in The 9th Grade....and these are his FINAL EXAMS.


Really Appreciate It:aktion033
--MR. NW--

 

[TheShotDoctor]

Please My Man.......

Kids that are home schooled, have a 37% better chance of winning the lottery.

Enough of THE BS.....!

I've been having a rough week......Don't Need The SmartAss Remarks....! So Please LayOff!




MR. NW:youmad:

 

[MattRain]

Kids that are home schooled, have a 37% better chance of winning the lottery.

:missingte:missingte:missingte