444 CHAPTER 7 The Metric System Exercises Warm Up Exercises In Exercises 1–10, fill in the blanks with an appropriate word, phrase, or symbol(s). 1. A procedure used to convert from one unit of measurement to a different unit of measurement is called _______ analysis. Dimensional 2. A fraction in which the numerator and denominator contain different units, and the value of the fraction is 1, is called a(n) _______ fraction. Unit 3. a) When converting from kilograms to pounds, use the unit fraction _______. 1 lb 0.4536 kg b) When converting from pounds to kilograms, use the unit fraction _______. 0.4536 kg 1 lb 4. a) When converting from centimeters to feet, use the unit fraction _______. 1 ft 30.48 cm b) When converting from feet to centimeters, use the unit fraction _______. 30.48 cm 1 ft 5. a) When converting from gallons to liters, use the unit fraction _______. 3.7854 1 gal b) When converting from liters to gallons, use the unit fraction _______. 1 gal 3.7854 6. a) When converting from square yards to square meters, use the unit fraction _______. 0.8361 m 1 yd 2 2 b) When converting from square meters to square yards, use the unit fraction _______. 1 yd 0.8361 m 2 2 7. a) When converting from cubic centimeters to cubic inches, use the unit fraction _______. 1 in. 16.3871 cm 3 3 b) When converting from cubic inches to cubic centimeters, use the unit fraction _______. 16.3871 cm 1 in. 3 3 8. a) When converting from cubic kilometers to cubic miles, use the unit fraction _______. 1mi 4.1682 km 3 3 b) When converting from cubic miles to cubic kilometers, use the unit fraction _______. 4.1682 km 1mi 3 3 9. a) When converting from acres to hectares, use the unit fraction _______. 0.4047 ha 1 ac b) When converting from hectares to acres, use the unit fraction _______. 1 ac 0.4047 ha 10. a) When converting from tons to tonnes, use the unit fraction _______. 0.9072 t 1T b) When converting from tonnes to tons, use the unit fraction _______. 1T 0.9072 t Practice the Skills In Exercises 11–26, convert the quantity to the indicated units. When appropriate, round your answer to the nearest hundredth. 11. 18 lb to kilograms 8.16 kg 12. 90 in. to centimeters 228.6 cm 13. 425 g to ounces 14.99 oz 14. 9.6 m to yards 10.50 yd 15. 175 kg to pounds 385.80 lb 16. 765 mm to inches 30.12 in. 17. 39 mi to kilometers 62.76 km 18. 20 yd2 to square meters 16.72 m2 19. 675 ha to acres 1667.90 ac 20. 25.2 to pints 53.25 pt 21. 253 oz to grams 7172.42 g 22. 4 T to tonnes 3.63 t 23. 3.8 km2 to square miles 1.47 mi2 24. 25.6 m to fluid ounces 0.87 fl oz 25. 120 lb to kilograms 54.43 kg 26. 6.2 acres to hectares 2.51 ha Problem Solving In Exercises 27– 60, when appropriate, round your answers to the nearest hundredth. 27. Race Distance Jessi ran in a race with a distance of 16,420.8 feet. What is this distance in miles? 3.11 mi 28. Coffee Creamer Yandi is buying supplies for a fundraising breakfast and estimates that about 300 ounces of coffee creamer are needed. How many quart cartons of creamer should Yandi buy? Assume only whole cartons can be bought. 10 cartons 29. Indian Rupees While visiting the city of Agra, Rohan paid 4395 Indian rupees for a vase. At the time, one U.S. dollar could be exchanged for 81.80 rupees. Determine the cost of the vase in U.S. dollars. $53.73 30. Japanese Yen Leroy is visiting Osaka and spent 25,840 Japanese yen to stay one night in a hotel. At the time, one U.S. dollar could be exchanged for 141.35 yen. Determine the cost of the hotel in U.S. dollars. $182.81 SECTION 7.4
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