Percentages and Proportions in Context

Miss White teaches seventh graders about identifying whole units in percent problems. The lesson includes exercises and examples using diagrams and calculations to solve percent problems. Students learn to identify parts, wholes, and percentages in various scenarios, including classroom and candy bag examples. The lesson concludes with a summary of solving percent problems using visual models and numeric methods.

In the scenario '15 is what percent of 90', which number is considered the whole?

• 75

• 105

• 90

• 15

If 25% of a bag of 300 candies are red, what is the whole unit in this scenario?

• 25 candies

• 75 candies

• 300 candies

• 100 candies

In a class where 70% of students earned a B, what represents the whole?

• 70 students

• All students in the class

• 50 students

• 30 students

How many students love the museum if 40% of 40 students on a field trip love it?

• 10 students

• 20 students

• 8 students

• 16 students

If 20 students love the museum and this represents 40% of the field trip attendees, how many students are on the trip?

• 30 students

• 50 students

• 25 students

• 40 students

What percent of students love the museum if 20 out of 40 students do?

• 50%

• 30%

• 40%

• 60%

In a class of 30 students, if 20% earned an A, how many students is that?

• 4 students

• 6 students

• 7 students

• 5 students

How many students completed the essay if 70% of 30 students did?

• 21 students

• 15 students

• 24 students

• 18 students

In a bag of 300 candies, if 28% are red, how many candies are red?

• 90 candies

• 84 candies

• 56 candies

• 72 candies

What is the unknown part if 28% of 300 candies are red?

• The total number of candies

• The number of red candies

• The percentage of red candies

• The number of non-red candies