Percentages

This box plot summarizes the percent scores of two different tests in one math class.

Which statement best describes the data represented in the box plots?

• The range for test 1 is 20.

• The interquartile range for test 2 is 20.

• Twenty students took test 1.

• Half the scores on test 2 were less than 75%.

A teacher made a histogram showing the percentages of the students in his classes.

Which statement about the data in the histogram must be true?

• More than half the percentages were 60%-100%.

• The teacher has a total of 70 students,

• Exactly 5 students received 51-60%.

• Half the students are girls and the other half are boys.

On Wednesday, 72% of the customers who bought gas at a gas station made additional purchases. There were 250 customers who bought gas. How many of these 250 customers made additional purchases?

The 6th graders at SFMS are going to Stars and Strikes. 60% of the 120 students want to go bowling first. How many students want to go bowling first? Use a tape diagram.

• 72 students

• 27 students

• 54 students

• 69 students

What is 25% of 200?

• 25

• 50

• 75

• 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

No calculator

• 40%

• 50%

• 60%

• 70%

• A
• B
• C
• D

What percent of 20 is 14? Use a proportion to solve.

• 15%

• 69%

• 142%

• 70%

change 25% to a decimal

• .25

• .2

• 2.5

• .025