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Sec 3.1 Writing Decimals and Fractions as Percents

Sec 3.1 Writing Decimals and Fractions as Percents. Objectives Write a percent as a decimal Write a percent as a fraction Write a fractional percent as a decimal Write a decimal as a percent Write a fraction as a percent. Percents are: hundredths, or parts of 100. Summary.

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Sec 3.1 Writing Decimals and Fractions as Percents

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  1. Sec 3.1 Writing Decimals and Fractions as Percents • Objectives • Write a percent as a decimal • Write a percent as a fraction • Write a fractional percent as a decimal • Write a decimal as a percent • Write a fraction as a percent

  2. Percents are: • hundredths, or • parts of 100

  3. Summary • To Write a Percent as a Decimal: • Delete the percent sign • Move the decimal point two places to the left.

  4. Summary • To Write a Percent as a Fraction: • First write the percent as a decimal • Next, write the decimal as a fraction • Finally, write the fraction in lowest terms.

  5. Summary • To Write a Fractional Percent as a Decimal: • Write the fraction as a decimal percent • Convert the decimal percent to a decimal--ie. delete the percent sign and move the decimal point two places to the left.

  6. Summary • To Write a Decimal as a Percent: • Move decimal point two places to the right • Attach percent (%) sign.

  7. Summary • To Write a Fraction as a Percent: • Multiply the fraction by 100 and express the result in lowest terms • Attach percent (%) sign.

  8. Solutions to Exercises P. 89 5. 2.034 = 203.4%

  9. Solutions to Exercises P. 89 14. .2108 = 21.08%

  10. Solutions to Exercises P. 89 24.

  11. Homework Sec 3.1 Divisible by 3 In other words: 3, 6, 9, 12, . . . 83.

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