Unit 3 Using Fractions and Percentages Presentation 1 Addition and Subtraction of Fractions Presentation 2 Multiplication and Division of Fractions Presentation.

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Presentation transcript:

Unit 3 Using Fractions and Percentages Presentation 1 Addition and Subtraction of Fractions Presentation 2 Multiplication and Division of Fractions Presentation 3 Compound Interest Presentation 4 Reverse Percentage Problem

Unit 3 Using Fractions and Percentages Addition and Subtraction of Fractions

When adding or subtracting fractions, you must have the same denominator. Example: (or ) Lowest common multiple of 4 and 5 is 20

When adding or subtracting fractions, you must have the same denominator. Example:

You have finished viewing the presentation Addition and Subtraction of Fractions Please choose an option Return to the Start Presentation 2 Multiplication and Division of Fractions Presentation 3 Compound Interest Presentation 4 Reverse Percentage Problem

Unit 3 Using Fractions and Percentages Multiplication and Division of Fractions

The rule is: Example: 3 is a common factor in both the numerator and denominator

The rule is: Example:

First Calculate Thus

You have finished viewing the presentation Multiplication and Division of Fractions Please choose an option Return to the Start Presentation 1 Addition and Subtraction of Fractions Presentation 3 Compound Interest Presentation 4 Reverse Percentage Problem

Unit 3 Using Fractions and Percentages Compound Interest

How much is $140 worth after 10 years in an account that pays 5% interest per year When A n is the total amount after investing A 0 for n years at r%

You have finished viewing the presentation Compound Interest Please choose an option Return to the Start Presentation 1 Addition and Subtraction of Fractions Presentation 2 Multiplication and Division of Fractions Presentation 4 Reverse Percentage Problem

Unit 3 Using Fractions and Percentages Reverse Percentage Problem

The price of a computer is $1398, including GCT at What was the price of the computer without GCT? To add 16.5% GCT, you multiply by To remove GCT, you divide by Computer price

You have finished viewing the presentation Reverse Percentage Problem Please choose an option Return to the Start Presentation 1 Addition and Subtraction of Fractions Presentation 2 Multiplication and Division of Fractions Presentation 3 Compound Interest