9-1: Express each ratio as a fraction in simplest form. (one point each)

1. 120 : 45 1. _________

2. 23 out of 37 oranges 2. _________

9-1: Express each ratio as a unit rate. (one point each)

3. 72 inches of snow in 9 hours 3. _________

4. 518 miles on 18.5 gallons of gas 4. _________

9-4: Solve each proportion. (one point each)

5. 5. _________

6. 6. _________

9-5: Use the percent proportion to solve each problem. (one point each)

7. What number is 30% of 60? 7. _________

8. 54 is 45% of what number? 8. _________

9. 45 is what percent of 60? 9. _________

9-7: Complete the following conversions. (one point each)

10. 1.25 as a percent. 10. _________

11. as a decimal 11. _________

12 as a % 12. _________

13. 58% as a decimal 13. _________

14. 65% as a fraction 14. _________

9-9: Find the discount to the nearest cent. (one point each)

15. $375 bicycle at 15% off. 15. _________

16. 20% off 5 CD’s that cost $65. 16. _________

9-10: Find the % change for each problem and then write whether it is an increase or decrease in the second space provided. (two points each)

17. Old: $30 17. _________

New: $36

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18. Old: $80 18. _________

New: $60

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