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Math Help - Quick Help

  1. #1
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    Quick Help

    My Daughter is year 7 and has this homework where she has to arrive at every number from 1 to 100 using only the numbers 1,2,7,8. She can also only use -,/,*,+ once in the equation. Im having trouble with this. Is there evan a way to arrive at these numbers using only the numbers once?????????????????????????
    Please explain someone
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  2. #2
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    mr fantastic's Avatar
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    Quote Originally Posted by nairnie View Post
    My Daughter is year 7 and has this homework where she has to arrive at every number from 1 to 100 using only the numbers 1,2,7,8. She can also only use -,/,*,+ once in the equation. Im having trouble with this. Is there evan a way to arrive at these numbers using only the numbers once?????????????????????????
    Please explain someone
    Surely you can do some of these numbers! Post the ones you can't do (if there are more than a few don't expect too much help, because asking too many would be beyond what is considered reasonable to ask).
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  3. #3
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    e^(i*pi)'s Avatar
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    Quote Originally Posted by nairnie View Post
    My Daughter is year 7 and has this homework where she has to arrive at every number from 1 to 100 using only the numbers 1,2,7,8. She can also only use -,/,*,+ once in the equation. Im having trouble with this. Is there evan a way to arrive at these numbers using only the numbers once?????????????????????????
    Please explain someone
    It's trial and error. All any of us would do is mess about with the numbers and see what happens.
    Last edited by mr fantastic; February 24th 2011 at 05:25 PM.
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