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Problem Recognition Exercises 57 Calculator Connections Topic: Multiplying and Dividing Whole Numbers To multiply and divide numbers on a calculator, use the and keys, respectively. Expression Keystrokes Result 38,319 1561 38319 1561 59815959 2,449,216 6248 2449216 6248 392 Calculator Exercises For Exercises 105–108, solve the problem. Use a calculator to perform the calculations. 105. The United States consumes approximately 21,000,000 barrels (bbl) of oil per day. (Source: U.S. Energy Information Administration) How much does it consume in 1 year? 106. The average time to commute to work for people living in Washington State is 26 min (round trip 52 min). (Source: U.S. Census Bureau) How much time does a person spend commuting to and from work in 1 year if the person works 5 days a week for 50 weeks per year? 107. The budget for theU.S. federal government for 2010 was approximately $3552 billion. (Source: www.gpo.gov) How much could the government spend each quarter and still stay within its budget? 108. At a weigh station, a truck carrying 96 crates weighs in at 34,080 lb. If the truck weighs 9600 lb when empty, how much does each crate weigh? Problem Recognition Exercises Operations on Whole Numbers For Exercises 1–14, perform the indicated operations. 1. a. b. c. d. 96 2496 24 96 24 96 24 2. a. b. c. d. 550 25550 25 550 25 550 25 3. a. b. 4. a. 612 b. 334 946 334 612 334 5. a. b. 6. a. b. 278 334 34,855 12,137 22,718 12,137 1201 4299 5500 4299 7. a. 50 400 b. 20,000 50 8. a. 548 63 b. 34,524 63 9. a. 5060 22 b. 230 22 10. a. 1875 125 b. 125 15 11. a. 41312 b. 3281312 12. a. 5474376 b. 84376 13. a. 418 10 b. 418 100 c. 418 1000 d. 418 10,000 14. a. 350,000 10 b. 350,000 100 c. 350,000 1000 d. 350,000 10,000


miller_prealgebra_2e_ch1_3
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