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Calculating the Percentage of a Whole

Calculating the Percentage of a Whole. Week 3 LSP 120 Joanna Deszcz. The Formula. Part = % Whole Whole means the entire pie. Part means one of the shaded regions or pieces of the pie. 3 Ways to Think about it. Solving Problems. 2 Methods Method 1

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Calculating the Percentage of a Whole

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  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.

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