Unit 3 Using Fractions and Percentages Presentation 1 Addition and Subtraction of F ractions Presentation 2 Multiplication and Division o f Fractions Presentation 3 Compound Interest Presentation 4 Reverse Percentage Problem
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Unit 3Using 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 3Using 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:
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Addition and Subtraction of FractionsPlease choose an option
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Presentation 2 Multiplication and Division of Fractions
Presentation 3 Compound Interest
Presentation 4 Reverse Percentage Problem
Unit 3Using 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:
Example:
First Calculate
Thus
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Multiplication and Division of FractionsPlease choose an option
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Presentation 1 Addition and Subtraction of Fractions
Presentation 3 Compound Interest
Presentation 4 Reverse Percentage Problem
Unit 3Using Fractions and Percentages
Compound Interest
How much is $140 worth after 10 years in an account that pays 5% interest per year
When An is the total amount after investing A0 for n years at r%
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Compound InterestPlease choose an option
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Presentation 1 Addition and Subtraction of Fractions
Presentation 2 Multiplication and Division of Fractions
Presentation 4 Reverse Percentage Problem
Unit 3Using 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 1.165To remove GCT, you divide by 1.165
Computer price
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Reverse Percentage ProblemPlease choose an option
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Presentation 1 Addition and Subtraction of Fractions
Presentation 2 Multiplication and Division of Fractions
Presentation 3 Compound Interest
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