Percents and Decimals
How do you write 0.4 as a percentage?
40%
Which is greater: 40% or 2/5?
Neither. They're equal.
18
$4 is what percent of $5?
80%
What is the percent of change from 200 to 20?
90% decrease
How do you write 2/10 as a percentage?
20%
Which is greater: 51% or 3/4?
3/4 (75%)
What is 10% of 8?
0.8
What percent of 9,000 is 2,250?
25%
What is the percent of change from 60,000 to 500,000?
88% increase
How do you write 1% as a decimal?
0.01
Which is greater: 82% or 82.12?
82.12
What is 75% of $4?
$3
Russell's town voted on a new speed limit. Out of 50 votes, 20 were in favor of the new speed limit. What percentage of the votes were in favor of the new speed limit?
40% in favor of the new speed limit
Last year, wind turbines along a hilly ridge had an average output of 600 kilowatt hours per year. The turbines were upgraded, and now their average annual output is 12% more. What is the new average yearly output?
672 kilowatt hours
How do you write 30% as a fraction?
30/100 or 3/10
Which is greater: 31% or 0.034?
31%
A bookstore carries 40 magazines. 70% of the magazines are women's magazines. How many women's magazines does the bookstore carry?
28 women's magazines
Polly's Burgers cooks its burgers either well done or medium. Last night, the restaurant served 63 well-done burgers and 27 medium burgers. What percentage of the burgers served were well done?
70% well done burgers
Last year, Tyler Elementary School's population was 610 students. This year, after rezoning, the population is 427 students. What is the percent of decrease in the student population?
30% decrease
How do you write 17/25 as a percentage?
68%
Which is greater: 27/96 or 28.31%?
28.31%
Hansen brought chocolate and vanilla cupcakes to school for his birthday. 30 students decided to take a cupcake, and 40% of them picked vanilla. How many people picked a vanilla cupcake?
12 people
A team of scientists surveyed the trees in a national forest. The scientists counted 168 evergreen trees and 42 deciduous trees. What percentage of the trees were evergreen?
80% were evergreen
Somerville's current population is 13,547 residents, which is 90% larger than at the time of its founding. What was the population of Somerville back then?
7,130 residents at the time of its founding