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Lecture Practical business math procedures (10/e): Chapter 6 - Jeffrey Slater

Chapter 6 - Percents and their applications. In this chapter, the learning objectives are: Convert decimals to percents (including rounding percents), percents to decimals, and fractions to percents; convert percents to fractions; list and define the key elements of the portion formula; solve for one unknown of the portion formula when the other two key elements are given; calculate the rate of percent decreases and increases. | Chapter 6 Percents and Their Applications Convert decimals to percents (including rounding percents), percents to decimals, and fractions to percents Convert percents to fractions Percent and Their Applications #6 Learning Unit Objectives Conversions LU6.1 List and define the key elements of the portion formula Solve for one unknown of the portion formula when the other two key elements are given Calculate the rate of percent decreases and increases Percent and Their Applications #6 Learning Unit Objectives Application of Percents -- Portion Formula LU6.2 Table 6.1 - Bag of M&M’s Decimal Percent Color Fraction (hundredth) (hundredth) Yellow 18 .33 32.73% 55 Red 10 .18 18.18% 55 Blue 9 .16 16.36% 55 Orange 7 .13 12.73% 55 Brown 6 .11 10.91% 55 Green 5 .09 9.09% 55 Total 55 1.00 100.00% 55 = 1 Converting Decimals to Percents .66 66% 8 800% Step 1. Move decimal point 2 places to the right. You are multiplying by 100. If necessary add zeros. Step 2. Add a percent symbol at | Chapter 6 Percents and Their Applications Convert decimals to percents (including rounding percents), percents to decimals, and fractions to percents Convert percents to fractions Percent and Their Applications #6 Learning Unit Objectives Conversions LU6.1 List and define the key elements of the portion formula Solve for one unknown of the portion formula when the other two key elements are given Calculate the rate of percent decreases and increases Percent and Their Applications #6 Learning Unit Objectives Application of Percents -- Portion Formula LU6.2 Table 6.1 - Bag of M&M’s Decimal Percent Color Fraction (hundredth) (hundredth) Yellow 18 .33 32.73% 55 Red 10 .18 18.18% 55 Blue 9 .16 16.36% 55 Orange 7 .13 12.73% 55 Brown 6 .11 10.91% 55 Green 5 .09 9.09% 55 Total 55 1.00 100.00% 55 = 1 Converting Decimals to Percents .66 66% 8 800% Step 1. Move decimal point 2 places to the right. You are multiplying by 100. If necessary add zeros. Step 2. Add a percent symbol at the end of the number Converting Decimals to Percents .425 .42.5 42.5% Step 1. Move decimal point 2 places to the right. You are multiplying by 100. If necessary add zeros. Rounding Percents .0588235 5.88% Step 1. When you convert from a fraction or decimal, be sure your answer is in percent before rounding. Step 2. Identify the specific digit. If the digit to the right of the identified digit is 5 or greater, round the identified digit. Delete digits to the right of the identified digit. 1 % 17 .0588235 Rounding Percents 18 55 .3272727 32.73% 32.73727% 55 18.000000 = Step 1 Step 2 Step 3 Converting Percents to Decimals 66% .66 8.244 824.4% Step 1. Drop the percent symbol. Step 2. Move decimal point 2 places to the left, You are dividing by 100. If necessary add zeros. Converting Fractional Percents to Decimals .0025 .0775 7 % Step 1. Convert a single fraction percent to its decimal equivalent by dividing the numerator by the denominator. Step 2. If a fractional .