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Decimals, fractions, and percents

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Decimals, fractions, and percents

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

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