1. Calculating the Percentage of a Whole Week 3 LSP 120 Joanna Deszcz

2. The Formula Part = % Whole Whole means the entire pie. Part means one of the shaded regions or pieces of the pie.

3. 3 Ways to Think about it

4. Solving Problems  2 Methods  Method 1 ◦ Identify the 2 given numbers as the part, whole or % of the problem ◦ Decide which version of the part/whole formula will help you answer the question  Always use the decimal version of the %

5. Solving Problems  Method 2 ◦ Remember the formula ◦ Fill in the given information ◦ Solve for the missing variable  Always use the decimal version of the %

6. Number Drills  2 is what percentage of 10?  20% of what number is 2?  What is 20% of 10?  What is 233% of 71?  What is.7% of 50?

7. Example In 2001, 6,113 applicants were accepted to DePaul. This represents about a 72% acceptance rate. Of the students who were accept, 2,050 students enrolled at the university. ◦ a. How many students in 2001 applied for admission at DePaul? ◦ b. What percent of the students who were accepted to DePaul actually enrolled at the University?

8. Apply what you learned Complete the Percent Activity in your groups.