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# Math unit3 using fractions and percentages

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Using fractions and percentages

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### Math unit3 using fractions and percentages

1. 1. 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
2. 2. Unit 3 Using Fractions and Percentages Addition and Subtraction of Fractions
3. 3. When adding or subtracting fractions, you must have the same denominator. Example: (or ) Lowest common multiple of 4 and 5 is 20
4. 4. When adding or subtracting fractions, you must have the same denominator. Example:
5. 5. 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
6. 6. Unit 3 Using Fractions and Percentages Multiplication and Division of Fractions
7. 7. The rule is: Example: 3 is a common factor in both the numerator and denominator
8. 8. The rule is: Example:
9. 9. Example: First Calculate Thus
10. 10. 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
11. 11. Unit 3 Using Fractions and Percentages Compound Interest
12. 12. 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%
13. 13. 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
14. 14. Unit 3 Using Fractions and Percentages Reverse Percentage Problem
15. 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
16. 16. 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