Mastering Percents through Proportions

The video tutorial explains how to use proportions to solve problems involving percents. It begins with an introduction to the concept of percents as fractions out of 100, making comparisons easier. The tutorial then provides three examples: finding a part of a whole, determining the whole from a part, and calculating the percent. Each example uses the method of setting up a proportion and solving it through cross-multiplication. The video concludes with an invitation for questions.

What is a percent always out of?

• 10

• 50

• 100

• 1000

Which method is used to solve the problem: What is 50% of 16?

• whole over percent equals part over 100

• percent over whole equals part over 100

• whole over part equals percent over 100

• part over whole equals percent over 100

In the problem 'What is 50% of 16?', what does the number 16 represent?

• Percent

• Part

• Whole

• Fraction

What is the result of 50% of 16?

• 7

• 6

• 8

• 9

In the problem '20 is 25% of what number?', what does the number 20 represent?

• Part

• Whole

• Fraction

• Percent

What is the whole number in the problem '20 is 25% of what number?'?

• 60

• 90

• 70

• 80

In the problem '15 is what percent of 60?', what does the number 60 represent?

• Part

• Percent

• Whole

• Fraction

What is the percent in the problem '15 is what percent of 60?'?

• 35%

• 20%

• 30%

• 25%

What is the first step in solving a proportion problem involving percents?

• Finding the part

• Finding the whole

• Labeling 100

• Cross-multiplying

What should you do if you have questions after watching the video?

• Ask when you come back together

• Ask immediately

• Wait until the next class

• Email the teacher