Grading Papers and Percentages

This video tutorial covers percent problems, focusing on calculating percentages of graded papers. It includes two main examples: Mr. Yoshi's grading of 75 papers and Mrs. Bennett's grading of 150 papers. The tutorial explains how to find percentages, equivalent ratios, and the difference between part and whole in percentage calculations. The lesson concludes with a summary of key points and tips for solving similar problems.

What is the total number of papers Mr. Yoshi had to grade?

• 100

• 60

• 75

• 80

How many papers did Mr. Yoshi grade himself?

• 15

• 20

• 60

• 75

What percentage of the papers did Mr. Yoshi grade?

• 80%

• 20%

• 75%

• 60%

What percentage of the papers did the student teacher grade?

• 15%

• 20%

• 80%

• 25%

How many papers did the student teacher grade?

• 15

• 20

• 60

• 75

What is the total number of papers Mrs. Bennett has to grade?

• 150

• 120

• 200

• 100

What percentage of her papers has Mrs. Bennett already graded?

• 20%

• 30%

• 50%

• 10%

How many papers has Mrs. Bennett graded so far?

• 40

• 20

• 50

• 30

How many papers does Mrs. Bennett still need to grade?

• 120

• 100

• 150

• 30

If Mrs. Bennett grades 10 more papers, how many will she have left?

• 110

• 100

• 90

• 120