Part-Whole and Percent Math

What is 84% of 25?

• 8.4

• 21

• 23

• 84

A student made an 85% on a test with 25 questions. What is the number of questions that the student answered correctly? Round to the nearest whole number.

• 21 questions

• 22 qestions

• 23 questions

• 24 questions

In the 6th grade, Miguel read 15 books. In 7th grade, he read 21 books. What was the percent change in the number of books Miguel read from 6th to 7th grade?

• 40% increase

• 40% decrease

• 20% increase

• 20% decrease

Last week, Betsy made 80 on her math quiz.  This week she made a 76.  What is the % of change on her score?

• 5%

• 12.5%

• 10%

• 4%

What is 75% of 120?

• 60

• 75

• 90

• 100

Sixteen students in the school band play clarinet. Clarinet players make up 20% of the band. Use a bar model to find the number of students in the school band.

• 80

• 8

• 40

• 160

What is 25% of 200?

• 25

• 50

• 75

• 100

If a graph shows that 25 students prefer reading and 15 students prefer writing, what is the ratio of students who prefer reading to those who prefer writing?

• 5:3

• 3:5

• 5:2

• 2:5

What is the ratio of 8 to 12?

• 2:3

• 3:2

• 4:3

• 1:2

A DVD movie originally cost $24.99. Its current price is $19.99. What is the percent of change rounded to the nearest percent?

• 20%

• 20.008%

• 25%

• 25.01%