# Homework help for dumb parent

Discussion in 'General Conversation' started by FS Driver, Apr 19, 2007.

1. ### FS DriverNew Member

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2,323
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swansea,illinoi
i need help with a math problem that i am trying to figure out for my 10 yr old son.
we have used the method of multiplication to come up with the answer
to a division of fractions problem and the answer just dont look right to me.

the problem is 1/2 divided by 1/10

i come up with 10/2 or reduced down to lowest form 5

for the life of me i cant see how you can divide 2 fractions that equal less than one whole number and end up with 5 .

anyone with an explanation ?

btw i am not a kid asking for help with my homework:lol:

2. ### bluejayWell-Known Member

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8,525
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Napoleon, Mo.

3. ### Mark JNew Member

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Four Oaks, NC
Thats what I get but I cheated. I converted it to decimal.
.5 divided by .10

4. ### FS DriverNew Member

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2,323
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swansea,illinoi
we are supposed to show work
the process of steps to get to the answer:crazy:

5. ### rebelzgrl76New Member

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1,359
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CO
I get 5 also for my answer

6. ### Ghost RiverNew Member

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466
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Carolina
5 is correct. The only way I can expain it to you is to say it is NOT 1/10th of 1/2. Would be multiplying the two. It is the opposite. SO you flip1/10th and multiply (which would be by 10)

1/2 divided by 1/10=

1/2 multiplied by 10= 5

Hope that was of some help

7. ### ryangWell-Known Member

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5,439
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Blacklick, Ohio
Name:
Gary
Ill give it a shot
5/5 X 1/2 = 5/10
5/10 / 1/10 = 5

5/1 = 5
10/10 = 1

5/1 = 5

8. ### FS DriverNew Member

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2,323
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swansea,illinoi
ryan i started to follow your procedure but you lost me on the 3ed line as i am not sure how to say or comprehend that quotation.
i believe you but i dont understand you:tounge_out:

9. ### Ol ManNew Member

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3,170
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Illinois
You're not dividing 2 fractions... you want to know how many times 1/10 will go into 1/2... the answer is 5...
Converted to decimal, the numbers are .1 and .5... 1 goes into 5, 5 times...

Ol' Man
~~~~~~~~~~
You may forget with whom you laughed, but you will never forget with whom you wept.

10. ### FS DriverNew Member

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2,323
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swansea,illinoi
thanks jeb now i see what i was missing.

11. ### bluejayWell-Known Member

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8,525
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Napoleon, Mo.
I've watched the show. I know I'm not smarter than a 5th grader!! LOL

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772
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Oxford,Miss
I don't do math if I can't count it on my fingers,that's why I didn't get my engineering deg.:confuse:

13. ### gilmafamWell-Known Member

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5,466
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California
the way that I see it......

1/2 / 1/10

I have remembered that when dividing fractions, invert the divisor, and then multiply....

1/2 x 10/1

1x10= 10
2x1 = 2
10/2 = 5

I like the way of changing the fractions to a decimal better

bayrunner ray

14. ### buddahNew Member

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1,622
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Pennsylvania Wi
.5 :lol: I feel your pain Brother! I'm back in school now too! I might be asking you for help soon! LOL Wouldn't that just be a hoot, huh? LOL

15. ### punkin570New Member

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2,015
State:
MS
Drc, I have tutored in this area for a lil while, at this stage most kidsin this age/grade arent gonna be converting to decimals to solve it, from what ive seen they are applyin the "invert adn multiply" process. Here is the way they are required to solve and show work around here.

step 1. 1/2 divided by 1/10=
step 2. 1/2 multiplied by 10/1(inverted)=
step 3. cancel out what applies...this would be the 2 &10
it should look like this now:
1/1 multiplied by 5/1=
step 4. now multiply straight across top and bottom:
will loook like this:1/1 x5/1=5/1=5

I hope this helps. I did tutorin 7th, 8th, and some lower grade and high school levels in the past couple years so I have seen alot of this kinda stuff. If you need any more help, I would be happy to try, just let me know.

16. ### BIG GEORGENew Member

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10,362
State:
JOISY
It is 5. Heres a twisted way that I use. If there are 10 tenths in a whole then there would be 5 of them in a half of a whole. Works for me.

17. ### splitshotNew Member

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2,827
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Coxsakie,N.Y.
BG--the problem with the way you arrived at the ans. was to simple and required way to much common sense. Unfortunately they dont teach common sense in schools anymore!!!:lol:

18. ### kat in the hatWell-Known Member

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4,875
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Missouri
Agreed. You made it way harder than what it is. Need a cup of java?

19. ### GatorNew Member

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Ludowici GA
DRC your far from Dumb brother.

20. ### FS DriverNew Member

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swansea,illinoi

bg top
i agree , that twisted way is the how solve math questions most of the time.
trouble with that is these questions on their homework require a written path showing the steps taken to arrive at the answer:embarassed:

i use measurements almost everyday useing a tape measure
the fractions i am familiar with are found on a ruler not inverted and improper ones.
so i use pie charts count fingers or use coins to try and illustrate a problem in homework and although i may come up with the right answer
my kid and wife look at me like im a dipstick cause i cant show the path to the answer:tounge_out: .

i wasn't understanding the problem properly.
jeb pointed it out best for me in that i was supposed to find out how many times 1/10 went into 1/2 for my mind that was easier to understand when put that way.
i was getting confused about such a large whole number ( 5 )as the answer when i was dealing with 2 fractions that were less than ( 1 ) whole number.
leslie thanks for the offer i am sure there will be more problems
yet
this year.

thanks everyone for your responses and help.