Homework help for dumb parent

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

  1. FS Driver

    FS Driver New Member

    Messages:
    2,323
    State:
    swansea,illinoi
    as the title of the thread reads .
    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 ?
    thanks in advance.

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

    bluejay Well-Known Member

    Messages:
    8,503
    State:
    Napoleon, Mo.
    Try .5 My answer.
     

  3. Mark J

    Mark J New Member

    Messages:
    9,407
    State:
    Four Oaks, NC
    Thats what I get but I cheated. I converted it to decimal.
    .5 divided by .10
     
  4. FS Driver

    FS Driver New Member

    Messages:
    2,323
    State:
    swansea,illinoi
    we are supposed to show work
    the process of steps to get to the answer:crazy:
     
  5. rebelzgrl76

    rebelzgrl76 New Member

    Messages:
    1,359
    State:
    CO
    I get 5 also for my answer
     
  6. Ghost River

    Ghost River New Member

    Messages:
    466
    State:
    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. ryang

    ryang Well-Known Member

    Messages:
    5,338
    State:
    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 Driver

    FS Driver New Member

    Messages:
    2,323
    State:
    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 Man

    Ol Man New Member

    Messages:
    3,170
    State:
    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 Driver

    FS Driver New Member

    Messages:
    2,323
    State:
    swansea,illinoi
    thanks jeb now i see what i was missing.
     
  11. bluejay

    bluejay Well-Known Member

    Messages:
    8,503
    State:
    Napoleon, Mo.
    I've watched the show. I know I'm not smarter than a 5th grader!! LOL
     
  12. badkarma

    badkarma New Member

    Messages:
    772
    State:
    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. gilmafam

    gilmafam Well-Known Member

    Messages:
    5,466
    State:
    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. buddah

    buddah New Member

    Messages:
    1,622
    State:
    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. punkin570

    punkin570 New Member

    Messages:
    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:
    1x5=5 adn 1x1=1
    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 GEORGE

    BIG GEORGE New Member

    Messages:
    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. splitshot

    splitshot New Member

    Messages:
    2,827
    State:
    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 hat

    kat in the hat New Member

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

    Gator New Member

    Messages:
    1,116
    State:
    Ludowici GA
    DRC your far from Dumb brother.
     
  20. FS Driver

    FS Driver New Member

    Messages:
    2,323
    State:
    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.