Percents and Decimals - Skyline R2 School率与小数Skyline R2学校.pptVIP

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Percents and Decimals - Skyline R2 School率与小数Skyline R2学校.ppt

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Percents and Decimals - Skyline R2 School率与小数Skyline R2学校

* * * * * * * * * * * * * Transparency 6 Click the mouse button or press the Space Bar to display the answers. Splash Screen Example 6-8b Objective Write percents as decimals and Decimals as percents Example 6-8b Vocabulary None Lesson 6 Contents Example 1 Write Percents as Decimals Example 2 Write Percents as Decimals Example 3 Write Percents as Decimals Example 4 Write Percents as Decimals Example 5 Write Decimals as Percents Example 6 Write Decimals as Percents Example 7 Write Decimals as Percents Example 8 Write Decimals as Percents Example 6-1a POPULATION According to the Administration on Aging, about 28% of the population of the United States is 19 years of age or younger. Write 28% as a decimal. Write the percent as a fraction. Answer: 0.28 Using the calculator, convert the fraction to a decimal by dividing numerator by denominator Write the problem 28 % 1/8 Remove the percent sign and put number in numerator Since percent refers to 100, make the denominator 100 Example 6-1b AMUSEMENT PARK A popular amusement park reports that 17% of its visitors will return at least three times during the year. Write 17% as a decimal. Answer: 0.17 1/8 Example 6-2a Write 47.8% as a decimal. Answer: 0.478 Write the problem 47.8 % Write the percent as a fraction. 0.478 2/8 Remove the percent sign and put number in numerator Since percent refers to 100, make the denominator 100 Using the calculator, convert the fraction to a decimal by dividing numerator by denominator Example 6-2b Write 83.2% as a decimal. Answer: 0.832 2/8 Example 6-3a Write 95.3% as a decimal. Answer: 0.953 Write percent as fraction 95.3 100 0.953 Write the problem 95.3 % 3/8 Remove the percent sign and put number in numerator Since percent refers to 100, make the denominator 100 Using the calculator, convert the fraction to a decimal by dividing numerator by denominator Example 6-3b Write 38% as a decimal. Answer: 0.38 3/8 Example 6-4a Write as a decimal. Answer: 0.082 Write the problem 8.2