Q&A for How to Change Numbers Into and Out of Scientific Notation

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  • Question
    How do I know the number of significant figures?
    Donagan
    Donagan
    Top Answerer
    The number of digits in the decimal number is the number of significant digits.
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  • Question
    What is 24 in scientific notation?
    Donagan
    Donagan
    Top Answerer
    24 = 2.4 x 10.
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  • Question
    How would I convert 1.23 x 10^-5 to 1.23 x 10^5?
    Donagan
    Donagan
    Top Answerer
    Multiply by 10^10.
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  • Question
    What if the exponent of 10 is a zero?
    Donagan
    Donagan
    Top Answerer
    10 (or any other number except zero) when raised to the power of zero is equal to 1.
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  • Question
    Why is it multiplied by 10?
    Donagan
    Donagan
    Top Answerer
    It's actually multiplied by a power of 10. 10 is used because our decimal system has a base of 10.
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  • Question
    I am trying to understand number forms. Is 547 a whole number, and is it written in scientific, standard, or expanded form?
    Donagan
    Donagan
    Top Answerer
    You can identify 547 as a whole number written in standard form.
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  • Question
    Can the coefficient in scientific notation be greater than 10?
    Donagan
    Donagan
    Top Answerer
    The standard form of scientific notation requires the coefficient to be a number between 1 and 10 (inclusive of 1, exclusive of 10). If you were to use a coefficient equal to or greater than 10, the corresponding exponent would be smaller for the same number.
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