lesson 3: percents. what is percent? ratio fraction part-to-whole ratio - ex: test: 45/50 = ??? -...

Lesson 3: PercentsLesson 3: Percents

What is Percent?What is Percent?

RatioRatio FractionFraction Part-to-whole ratioPart-to-whole ratio - ex: Test: 45/50 = ???- ex: Test: 45/50 = ??? Compares a whole number divided Compares a whole number divided

into 100 equal partsinto 100 equal parts What is a cent?What is a cent? - 1/100 of a - 1/100 of a dollardollar

When do we see percentages in real When do we see percentages in real life???life???

- Test Marks: What is your maximum - Test Marks: What is your maximum mark?mark?

- = 1! - = 1! - Sports- Sports

- Experiments- Experiments

- Flyers!!! 33% off!!!- Flyers!!! 33% off!!!

DiagramsDiagrams

Write these diagrams as fractions and percentages

Write 0.25 as…Write 0.25 as…

A fractionA fraction A ratioA ratio A percentageA percentage

- Divide 25/100 to get your - Divide 25/100 to get your percentagepercentage

What are the part-part-whole What are the part-part-whole relationships on a test?relationships on a test?

Part 1- Correct answersPart 1- Correct answers Part 2 – Incorrect AnswersPart 2 – Incorrect Answers Whole – Test itselfWhole – Test itself

QuestionsQuestions

How Would You Say the Following How Would You Say the Following in Mathematical Language?in Mathematical Language?

87/10087/100 0.240.24 3/103/10 0.090.09 0.0040.004

More QuestionsMore Questions

Let’s Use the Internet! Let’s Use the Internet!

For these questions…For these questions…

QuestionsQuestions

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- 1,2,7.9,11- 1,2,7.9,11