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  1. To find the decimal form of a percentage, you divide by 100.  If you have a decimal, then to divide by 100 just move the decimal 2 places to the left.

    0.4% = .004

    Now to turn it into a fraction, just read the place value...
    four one thousandths = 4/1000

    Now reduce... 4/1000 = 2/500 = 1/250

    The simplest form of 0.4% as a fraction is...    1/250

  2. Using the place value chart, we can see that the decimal 0.4 is four tenths, so we can write 0.4 as the fraction [tex]\frac{4}{10}[/tex]. Notice however that the fraction is not in lowest terms. We will need to divide the numerator and the denominator by the greatest common factor of 4 and 10 which is 2. Therefore, 0.4 can be written as the fraction [tex]\frac{2}{5}[/tex], which is in lowest terms.

    [tex]Write 0.4 as a fraction in simplest form[/tex]

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