Lesson 3: Percents.

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Presentation transcript:

Lesson 3: Percents

What is Percent? Ratio Fraction Part-to-whole ratio - ex: Test: 45/50 = ??? Compares a whole number divided into 100 equal parts What is a cent? - 1/100 of a dollar

When do we see percentages in real life??? - Test Marks: What is your maximum mark? - = 1!  - Sports - Experiments - Flyers!!! 33% off!!!

Diagrams Write these diagrams as fractions and percentages

Write 0.25 as… A fraction A ratio A percentage - Divide 25/100 to get your percentage

What are the part-part-whole relationships on a test? Part 1- Correct answers Part 2 – Incorrect Answers Whole – Test itself

Questions

How Would You Say the Following in Mathematical Language? 87/100 0.24 3/10 0.09 0.004

More Questions

Let’s Use the Internet!  For these questions…

Questions Page 188-189 - 1,2,7.9,11