Title: Unit 3 Using Fractions and Percentages
1Unit 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
2Unit 3Using Fractions and Percentages
- Addition and Subtraction of Fractions
3- When adding or subtracting fractions, you must
have the same denominator. - Example
Lowest common multiple of 4 and 5 is 20
4- When adding or subtracting fractions, you must
have the same denominator. - Example
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Addition and Subtraction of FractionsPlease
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Presentation 2 Multiplication and Division of Fractions
Presentation 3 Compound Interest
Presentation 4 Reverse Percentage Problem
6Unit 3Using Fractions and Percentages
- Multiplication and Division of Fractions
73 is a common factor in both the numerator and
denominator
8The rule is Example
9- Example
- First Calculate
- Thus
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Multiplication and Division of FractionsPlease
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Presentation 1 Addition and Subtraction of Fractions
Presentation 3 Compound Interest
Presentation 4 Reverse Percentage Problem
11Unit 3Using Fractions and Percentages
12When An is the total amount after investing A0
for n years at r
- How much is 140 worth after 10 years in an
account that pays 5 interest per year
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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
14Unit 3Using Fractions and Percentages
- Reverse Percentage Problem
15- 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 1.165
- To 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