Percentages, Fractions, and Proportions

This video tutorial covers a comprehensive review of seventh-grade math topics, focusing on division with fractions, solving proportions, calculating unit rates, and handling percent problems. It also includes practical applications like calculating percent change and tips. The tutorial uses methods like keep-change-flip for fractions and cross-multiplication for proportions, providing clear examples and explanations for each concept.

What is the result of dividing 4/3 by 5 using the 'keep change flip' method?

• 15/4

• 5/4

• 4/15

• 3/20

How do you convert the mixed number 3 2/3 into an improper fraction?

• 11/3

• 9/2

• 10/3

• 8/3

Which method can be used to solve a proportion like 12/x = 4/18?

• Addition

• Cross multiplication

• Subtraction

• Division

If a 6-foot wire costs $1.26, what is the cost per foot?

• $0.21

• $0.19

• $0.25

• $0.15

What is Joey's average speed if he rides 3.5 miles in half an hour?

• 3.5 miles per hour

• 7 miles per hour

• 10 miles per hour

• 5 miles per hour

What is 40% of 30?

• 12

• 15

• 18

• 10

How do you calculate the percent increase from 42 to 63?

• 25%

• 50%

• 33%

• 40%

What is a 15% tip on a $15.75 dinner bill?

• $2.36

• $1.50

• $3.00

• $2.00

How much would a $29.50 shirt cost with a 5% tax?

• $31.00

• $29.75

• $30.98

• $30.50

What is the total cost of a $29.50 shirt including a 5% tax using a single calculation?

• $30.98

• $31.50

• $29.75

• $30.00