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# Math unit2 percentages

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### Math unit2 percentages

1. 1. Unit 2 Percentages Presentation 1 Conversion Presentation 2 Conversion: Revision Presentation 3 Percentages of Quantities Presentation 4 Quantities as Percentages Presentation 5 Percentage Increases and Decreases
2. 2. Unit 2 Percentages Conversion
3. 3. What is as i) decimal and ii) fraction? i) ii) as a fraction in its simplest form
4. 4. What is as a percentage? Express as a fraction with 100 as the denominator
5. 5. What is as a percentage? Write as a fraction with 100 as the denominator
6. 6. You have finished viewing the presentation Conversion Please choose an option Return to the Start Presentation 2 Conversion: Revision Presentation 3 Percentages of Quantities Presentation 4 Quantities as Percentages Presentation 5 Percentage Increases and Decreases
7. 7. Unit 2 Percentages Conversion: Revision
8. 8. Fractions Decimals Percentages
9. 9. You have finished viewing the presentation Conversion: Revision Please choose an option Return to the Start Presentation 1 Conversion Presentation 3 Percentages of Quantities Presentation 4 Quantities as Percentages Presentation 5 Percentage Increases and Decreases
10. 10. Unit 2 Percentages Percentages of Quantities
11. 11. Find of J\$76 First convert the percentage into either a fraction or decimal Decimal method
12. 12. Find of J\$76 First convert the percentage into either a fraction or decimal Fraction method
13. 13. You have finished viewing the presentation Percentages as Quantities Please choose an option Return to the Start Presentation 1 Conversion Presentation 2 Conversion: Revision Presentation 4 Quantities as Percentages Presentation 5 Percentage Increases and Decreases
14. 14. Unit 2 Percentages Quantities as Percentages
15. 15. In a class of 25 students, there are 10 girls. What percentage of the class are girls? The fraction of girls is: As a percentage, this is:
16. 16. A book contained 80 black and white pictures and 120 colour pictures. What percentage of the pictures were in colour? The fraction of colour pictures: As a percentage this is:
17. 17. A bank pays interest of % per annum. How much interest do you get in one year if you invest J\$50? Interest
18. 18. You have finished viewing the presentation Quantities as Percentages Please choose an option Return to the Start Presentation 1 Conversion Presentation 2 Conversion: Revision Presentation 3 Percentages of Quantities Presentation 5 Percentage Increases and Decreases
19. 19. Unit 2 Percentages Percentage Increases and Decreases
20. 20. Percentage increase Example: The population of a village increased from 234 to 275 in one year. What was the percentage increase? Actual increase Percentage increase (to 2 decimal places)
21. 21. Percentage decrease Example: A cup of sand is dried in a hot oven. Its mass reduces from 450 grams to 320 grams. What is the percentage decrease of its mass? Actual reduction Percentage reduction (to 1 decimal places)
22. 22. You have finished viewing the presentation Percentage Increases and Decreases Please choose an option Return to the Start Presentation 1 Conversion Presentation 2 Conversion: Revision Presentation 3 Percentages of Quantities Presentation 4 Quantities as Percentages