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Decimals, fractions, and percents

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Transcript

  • 1. Decimals, Fractions, and Percents
    August 30, 2010
  • 2. Decimals  Fractions
    Non-repeating
    Drop decimal point
    Put number over place value
    Reduce
    Example
    0.4 = =
  • 3. Decimals  Fractions
    Examples
    0.4 = =
    0.22 = =
    0.121 =
    5.011 = =
  • 4. Decimals  Fractions
    Repeating Decimals
    If one digit repeats, put over 9 and reduce
    If two digits repeat, put over 99 and reduce
    If three digits repeat, put over 999 and reduce
    Examples
    = =
    =
    3. = =
  • 5. Decimals  Fractions
    If you are using a TI Graphing Calculator (TI-83+, TI-84), you can check yourself:
    Type in the decimal
    Select Math
    Select #1: Fraction
    Select Enter
    Decimal  Math  Enter Enter
    Note: You still must SHOW YOUR WORK with all of the steps on your homework and test. This is only to check your answer.
  • 6. Fractions  Decimals
    Numerator
    Denominator
    Examples
    = 3.
  • 7. Decimals  Percents
    Percent (%) means hundredths
    Move decimal point 2 places to right
    Use %
    Examples
    3.
    4.
  • 8. Percents Decimals
    Drop % Symbol
    Move decimal point 2 places to the left
    Examples
    3.
    4.
  • 9. Percents Fractions andFractions  Percents
    Percent  Decimal  Fraction
    Fraction  Decimal  Percent
    Examples
    1.
    2.
  • 10. Exit Slip
    Change to a fraction.
    Change to a decimal.
    Change .34 to a percent.
    Change 2% to a decimal.