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Math Help - base and exponents!!!! HELP ME!!!

  1. #1
    Newbie beesleystudent16's Avatar
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    Exclamation base and exponents!!!! HELP ME!!!

    Okay Some of these I know How to do but it takes sooo long so if you have any shortcuts TELL ME!! 1.32=2(base) 2.243 base 3 3.900 base 30 4.121 base 11. THANX!
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  2. #2
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    Quote Originally Posted by beesleystudent16 View Post
    Okay Some of these I know How to do but it takes sooo long so if you have any shortcuts TELL ME!! 1.32=2(base) 2.243 base 3 3.900 base 30 4.121 base 11. THANX!
    The easiest way is to write down a sequence of all the powers of your bases, which you can get by continually multiplying by the base... Then it's position tells you what the power is...

    E.g. powers of 2 are 2, 4, 8, 16, 32, 64, etc... (which we get by continually multiplying by 2).

    Since 32 is in the 5th position, 32=2^5.

    Similarly, the powers of 3 are 3, 9, 27, 81, 243, 729, etc... (which we get by continually multiplying by 3).

    Since 243 is in the 5th position, 243 = 3^5.

    Can you do it for powers of 11?
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  3. #3
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    Wink Just to Thank You

    I am just starting sixth grade and I lost track of how to do bases and exponents, so I am very thankful. I now understand and appreciate your help.

    Katie Hanks
    Last edited by bobhanks; September 10th 2008 at 06:14 AM. Reason: Identify the person who's got the problem!
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  4. #4
    Newbie beesleystudent16's Avatar
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    ?????

    What the heck dad?!?
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