7th 3-1 Percents of Numbers

A local little league has a total of 60 ​players, of whom 20​% are left​-handed. How many left​-handed players are​ there?

• 15

• 48

• 12

• 45

The football team has a total of 800 jerseys. There are 6​ medium-sized jerseys. What percent of the jerseys are​ medium-sized jerseys?

• 0.75%

• 7.5%

• 75%

• 0.075%

Find the sales tax.

• $3.20

• $320

• $0.20

• $20

When a bush was first planted in a​ garden, it was 12 cm tall. After two​ weeks, it was 120​% as tall as when it was first planted. Use mental math to find how tall the bush was after the two weeks.

• 14.4

• 1.44

• 10

• 100

The number of students in the marching band this year is​ 125% as many as the number of students in the marching band last year. If there were 36 students in the marching band last​ year, how many students are in the marching band this​ year?

• 50

• 40

• 45

• 55

Find the commission.

• $375

• $37.50

• $0.66

• $42.35

Complete the statement to make it true.

Your friend estimated that it would take 5 hours to finish an art project. It actually took him 16 hours to finish the project. The amount of time it took to finish the project was​ ____% of the estimated time.

• 320%

• 31.25%

• 3.2%

• 3.125%

 $\frac{3}{50}\%$  of a quantity is equal to what fraction of the​ quantity?

•  $\frac{3}{5}$  
  

•  $\frac{3}{50}$  
  

•  $\frac{3}{500}$  
  

•  $\frac{3}{5000}$  
  

Your friend sells you a bicycle for ​$63 and a helmet for ​$21. The total cost is 150​% of what your friend spent originally. How much did your friend spend​ originally?

• $56

• $84

• $126

• $104

Error Analysis: A newspaper reporter wrote an article about the amount of a toxin found in a river near a factory. In the​ article, the reporter incorrectly used 0.25 as the decimal form of 1/4​ %. What is the correct way to write 1/4​ % as a​ decimal?

• 0.025

• 0.0025

• 0.00025

• 0.000025