76 Chapter 1 Whole Numbers Section 1.8 Practice Exercises Study Skills Exercise Sometimes you may run into a problem with homework, or you may find that you are having trouble keeping up with the pace of the class.A tutor can be a good resource. Answer the following questions. a. Does your college offer tutoring? b. Is it free? c. Where would you go to sign up for a tutor? Vocabulary and Key Concepts 1. Which expression is undefined, 4 0 or 0 4? Review Exercises For Exercises 2–13, translate the English phrase into a mathematical statement and simplify. 2. 89 decreased by 66 3. 71 increased by 14 4. 16 more than 42 5. Twice 14 6. The difference of 93 and 79 7. Subtract 32 from 102 8. Divide 12 into 60 9. The product of 10 and 13 10. The total of 12, 14, and 15 11. The quotient of 24 and 6 12. 41 less than 78 13. The sum of 5, 13, and 25 Concept 1: Problem-Solving Strategies 14. In your own words, list the guidelines or strategy that you would use to solve an application problem. For Exercises 15–18, write two or more key words or phrases that represent the given operation. Answers may vary. 15. Addition 16. Multiplication 17. Subtraction 18. Division Concept 2: Applications Involving One Operation 19. White Mountain Peak in California is 14,246 ft high. Denali in Alaska is 20,320 ft high. How much higher is Denali than White Mountain Peak? (See Example 1.) 20. In a recent year, Reader’s Digest was the best-selling U.S. magazine with 12,212,000 yearly subscriptions. Sports Illustrated was 15th overall and had 3,252,900 yearly subscriptions. How many more subscriptions did Reader’s Digest have than Sports Illustrated? Crude Oil Consumption in 2009 Population For Exercises 21–22, refer to the table. Country (in barrels per day) 2009 United States 18,690,000 307,000,000 China 8,220,000 1,339,000,000 Japan 4,360,000 127,000,000 Russia 4,210,000 140,000,000 Canada 2,170,000 33,000,000 Source: U.S. Energy Information Administration
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