Help Please - Math ?

Discussion in 'Homeschooling' started by Lee, Mar 30, 2011.

  1. Lee

    Lee New Member

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    3 cubed divided by 6 = ?

    The answer we come up with is 4.5 but the answer book is 3/2. Can someone please explain this to me. This is in our state practice test book.
     
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  3. azhomeschooler

    azhomeschooler New Member

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    I would guess a misprint unless someone else has an explanation, I get the same answer as you.
     
  4. Mattsmama

    Mattsmama New Member

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    I get 4.5 just like you. So now I am curious as to hear this as well;)
     
  5. Lindina

    Lindina Active Member

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    3^3 is 27 or 3x3x3, and the whole thing is divided by 6, which is 3x2. If we write that as a fraction, and cancel out the same number of 3's top and bottom (one each), we would have (3x3)/2 left, which would be 4.5 or 9/2. Nope, I'm not getting any farther than you did.

    I tried entering 3^3/6 into my search box and here's what came up:
    Calculation
    3^3/6 = Decimal: 4.5
    3^3/6 = Fractional 4 1/2

    the only thing I can figure out is that they meant 3 squared divided by 6 = 3/2
     
  6. Jackie

    Jackie Active Member

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    Carl says the book is wrong. The answer is 4.5

    Now he's saying they sqared it. 3x3 is 9, and 9 divided by 6 is 1.5 But if it's supposed to be cubed, the answer is 4.5
     
  7. Lee

    Lee New Member

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    Thank you everyone. I thought that book was wrong too. I hope that the actual test is more accurate than this.
     
  8. cabsmom40

    cabsmom40 Active Member

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    It has to be a mistake. Frustating!
     
  9. mommix3

    mommix3 Active Member

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    I got the same answer too.
     
  10. becky

    becky New Member

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    Call the publisher!!
    I've called ACSI about mistakes in our math, and we've been using it since second grade, I believe. They're nice about it, lol, and they admit some get by them.
     

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