Section 1
Understand Percent
In the following exercises, write each percent as a ratio.In 2014 , the unemployment rate for those with only a high school degree was 6.0$\%$
In the following exercises, write each percent as a ratio.In $2015,$ among the unemployed, 29$\%$ were long term unemployed.
In the following exercises, write each percent as a ratio.The unemployment rate for those with Bachelor's degrees was 3.2$\%$ in 2014 .
In the following exercises, write each percent as a ratio.The unemployment rate in Michigan in 2014 was 7.3$\%$
In the following exercises, write as(a) a ratio and (b) a percent
57 out of 100 nursing candidates received their degree at a community college.
80 out of 100 firefighters and law enforcement officers were educated at a community college.
42 out of 100 first-time freshmen students attend a community college.
71 out of 100 full-time community college faculty have a master's degree.
In the following exercises, convert each percent to a fraction and simplify all fractions.$$4 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$8 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$17 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$19 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$52 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$78 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$125 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$135 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$37.5 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$42.5 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$18.4 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$46.4 \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$9 \frac{1}{2} \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$8 \frac{1}{2} \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$5 \frac{1}{3} \%$$
In the following exercises, convert each percent to a fraction and simplify all fractions.$$6 \frac{2}{3} \%$$
In the following exercises, convert each percent to a decimal.$$5 \%$$
In the following exercises, convert each percent to a decimal.
In the following exercises, convert each percent to a decimal.$$9 \%$$
In the following exercises, convert each percent to a decimal.$$2 \%$$
In the following exercises, convert each percent to a decimal.$$63 \%$$
In the following exercises, convert each percent to a decimal.$$71 \%$$
In the following exercises, convert each percent to a decimal.$$40 \%$$
In the following exercises, convert each percent to a decimal.$$50 \%$$
In the following exercises, convert each percent to a decimal.$$115 \%$$
In the following exercises, convert each percent to a decimal.$$125 \%$$
In the following exercises, convert each percent to a decimal.$$150 \%$$
In the following exercises, convert each percent to a decimal.$$250 \%$$
In the following exercises, convert each percent to a decimal.$$21.4 \%$$
In the following exercises, convert each percent to a decimal.$$39.3 \%$$
In the following exercises, convert each percent to a decima$$7.8 \%$$
In the following exercises, convert each percent to a decimal.$$6.4 \%$$
In the following exercises, convert each percent to(a) a simplified fraction and (b) a decimal
In $2010,1.5 \%$ of home sales had owner financing. (Source;Bloomberg Business week, $23-29 / 2011)$
In $2000,4.2 \%$ of the United States population was of Asian descent. www.census.gov)
According to government data, in 2013 the number of cell phones in India was 70.23$\%$ of the population.
According to the U.S. Census Bureau, among Americans age 25 or older who had doctorate degrees in $2014,37.1 \%$ are women.
A couple plans to have two children. The probability they will have two girls is 25$\% .$
Javier will choose one digit at random from 0 through 9 . The probability he will choose 3 is 10$\%$ .
According to the local weather report, the probability of thunderstorms in New York City on July 15 is 60$\% .$
A club sells 50 tickets to a raffle. Osbaldo bought one ticket. The probability he will win the raffle is 2$\% .$
In the following exercises, convert each decimal to a percent.$$0.01$$
In the following exercises, convert each decimal to a percent.$$0.03$$
In the following exercises, convert each decimal to a percent.$$0.18$$
In the following exercises, convert each decimal to a percent.$$0.15$$
In the following exercises, convert each decimal to a percent.$$1.35$$
In the following exercises, convert each decimal to a percent.$$1.56$$
In the following exercises, convert each decimal to a percent.$$3$$
In the following exercises, convert each decimal to a percent.$$4$$
In the following exercises, convert each decimal to a percent.$$0.009$$
In the following exercises, convert each decimal to a percent.$$0.008$$
In the following exercises, convert each decimal to a percent.$$0.0875$$
In the following exercises, convert each decimal to a percent.$$0.0625$$
In the following exercises, convert each decimal to a percent.$$1.5$$
In the following exercises, convert each decimal to a percent.$$2.2$$
In the following exercises, convert each decimal to a percent.$$2.254$$
In the following exercises, convert each decimal to a percent.$$2.317$$
In the following exercises, convert each fraction to a percent.$$\frac{1}{4}$$
In the following exercises, convert each fraction to a percent.$$\frac{1}{5}$$
In the following exercises, convert each fraction to a percent.$$\frac{3}{8}$$
In the following exercises, convert each fraction to a percent.$$\frac{5}{8}$$
In the following exercises, convert each fraction to a percent.$$\frac{7}{4}$$
In the following exercises, convert each fraction to a percent.$$\frac{9}{8}$$
In the following exercises, convert each fraction to a percent.$$6 \frac{4}{5}$$
In the following exercises, convert each fraction to a percent.$$5 \frac{1}{4}$$
In the following exercises, convert each fraction to a percent.$$\frac{5}{12}$$
In the following exercises, convert each fraction to a percent.$$\frac{11}{12}$$
In the following exercises, convert each fraction to a percent.$$2 \frac{2}{3}$$
In the following exercises, convert each fraction to a percent.$$1 \frac{2}{3}$$
In the following exercises, convert each fraction to a percent.$$\frac{3}{7}$$
In the following exercises, convert each fraction to a percent.$$\frac{6}{7}$$
In the following exercises, convert each fraction to a percent.$$\frac{5}{9}$$
In the following exercises, convert each fraction to a percent.$$\frac{4}{9}$$
In the following exercises, convert each fraction to a percent.$\frac{1}{4}$ of washing machines needed repair.
In the following exercises, convert each fraction to a percent.$\frac{1}{5}$ of dishwashers needed repair.
In the following exercises, convert each fraction to a percent.According to the National Center for Health Statistics, in $2012, \frac{7}{20}$ of American adults were obese.
In the following exercises, convert each fraction to a percent.The U.S. Census Bureau estimated that in $2013,85 \%$ of Americans lived in the same house as they did 1 year before.
In the following exercises, complete the table.
Sales tax Felipa says she has an easy way to estimate the sales tax when she makes a purchase. The sales tax in her city is 9.05$\% .$ She knows this is a little less than 10$\%$ .(a) Convert 10$\%$ to a fraction.(b) Use your answer from (a) to estimate the sales tax Felipa would pay on a $\$ 95$ dress.
Savings Ryan has 25$\%$ of each paycheck automatically deposited in his savings account.(a) Write 25$\%$ as a fraction.(b) Use your answer from (a) to find the amount that goes to savings from Ryan's $\$ 2,400$paycheck.
Amelio is shopping for textbooks online. He found three sellers that are offering a book he needs for thesame price, including shipping. To decide which seller to buy from he is comparing their customersatisfaction ratings. The ratings are given in the chart.
Write seller C’s rating as a fraction and a decimal.
Write seller $\mathrm{B}$ 's rating as a percent and a decimal.
Write seller A's rating as a percent and a decimal.
Which seller should Amelio buy from and why?
Convert $25 \%, 50 \%, 75 \%,$ and 100$\%$ to fractions. Do you notice a pattern? Explain what the pattern is.
Convert $\frac{1}{10}, \frac{2}{10}, \frac{3}{10}, \frac{4}{10}, \frac{5}{10}, \frac{6}{10}, \frac{7}{10}, \frac{8}{10},$ and $\frac{9}{10}$ to percents. Do you notice a pattern? Explain what the pattern is.
When the Szetos sold their home, the selling price was 500$\%$ of what they had paid for the house30 years ago. Explain what 500$\%$ means in this context.
According to cnn.com, cell phone use in 2008 was 600$\%$ of what it had been in 2001 . Explain what600$\%$ means in this context.