Review+Chapter+5


 * Review Questions:**

Express as a percent. 1. 53/100 2. 0.3 3. 4/5 4. 0.155 5. 0.05 6. 5/20

7. Express 65% a). as a decimal b). as a fraction in lowest terms

Calculate. 8. 12% of 65 9. 75% of 60 10. 65% of 80 11. 83% of 2000 12. What percent is 20 is 12? 13. Write 72 as a percent of 240. 14. What percent of 50 is 20? 15. What is 66% of $32.78? 16. What is 3% of $1200?

17. At the end of 1990, 20 nuclear reactors were operating in Canada. Of these, 18 were in Ontario, 1 was in Quebec, and 1 was in New Brunswick. Calculate the percent of the reactors that were in these locations. a). Ontario b). Quebec c). New Brunswick d). the rest of the country.

18. In a grade 7 class, 62.5% of the students owned at least 1 pet. If there were 32 students in the class, how many owned at least 1 pet?

19. In 1993, the number of First Nations bands in Canada was 605. About 32.4% of these bands were located in British Columbia. Estimate, then calculate how many First Nations bands were located in British Columbia. Round your calculated answer to the nearest whole number.

20. The equatorial diameter of Earth is 12 756 km. The equatorial diameter of Mars is 6787 km. What percent of the equatorial diameter of Earth is the equatorial diameter of Mars. Round your answer to the nearest tenth of a percent.

21. At the 1964 Winter Olympics in Innsbruck, Australia, 200 of the 1186 competitors were women. At the 1994 Winter Olympics in Lillehammer, Norway, 521 of the 1737 cometitors were women. For each Winter Olympics, what percent of the total competitors were women? Round your answers to the nearest percent.

22. The area of Lake Winnipegosis, Manitoba, is about 17.5% of the area of Great Bear Lake, Northwest Territories. If the area of Great Bear Lake is 31 238 km², what is the area of Lake Winnipegosis?

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