Percentage Calculations and Strategies

This video tutorial covers lesson six on fluency with percents. It begins with a review of concepts from lesson five, followed by solving problems involving percentages, such as calculating the number of model cars, determining the percentage of students taller than 60 inches, and calculating tips. The video also provides advanced strategies for percentage calculations and concludes with exercises for practice.

Corey has 80 model cars, which is 25% more than Everett's collection. How many cars does Everett have?

• 60

• 80

• 64

• 100

In Jessie's class, 75% of the students are 60 inches or taller. If there are 20 students, how many are 60 inches or taller?

• 15

• 10

• 5

• 20

Which of the following is a part-whole relationship in percentages?

• 15% tip on a bill

• 75% of students in a class

• 20% discount on a product

• 7% of a bill

What is the equivalent of 75% in terms of fractions?

• 2/3

• 3/4

• 1/2

• 1/4

Bobby wants to leave a 15% tip on an $18 bill. How much is the tip?

• $3.00

• $2.00

• $1.80

• $2.70

What is the first step in calculating 15% of a number mentally?

• Find 10% and then 5%

• Find 25% and subtract 10%

• Find 20% and subtract 5%

• Find 5% and then 10%

What is 7% of an $18 bill?

• $1.26

• $0.90

• $1.80

• $1.50

What is the strategy to find 7% of a number?

• Break it into 10% and 5%

• Break it into 5% and 2%

• Break it into 3% and 4%

• Break it into 6% and 1%

If 12 is a part of 60, what percentage does 12 represent?

• 20%

• 15%

• 25%

• 30%

How can you mentally determine the whole number if 15 is 30% of it?

• 30

• 50

• 45

• 60