74) A 5-minute shower uses about 12.5 gal of water. Convert this number to liters. Round to the nearest tenth. 75) The builder installed a 190-liter water heater in a new home. Convert this number to gallons. Round to the nearest gallon. 76) A bakery ordered a 22.5-kg sack of Swiss pastry fl our. Convert this number to pounds. 77) Crystal’s cell phone is 4 in. long. Convert this number to centimeters. Round to the nearest tenth. 78) The driving distance between Little Rock, AR, and Nashville, TN, is about 350 mi. Convert this number to kilometers. Round to the nearest kilometer. Determine which Celsius temperature is appropriate for the situation. 79) Water freezes at . Choose from 0C, 10C, and 32C. 80) The high temperature on a summer day in Hawaii might be . Choose from 5C, 84C, and 31C. Perform the following temperature conversions. Round to the nearest degree, if necessary. 81) Convert 50F to Celsius. 82) Convert 86F to Celsius. 83) Convert 79F to Celsius. 84) Convert 37F to Celsius. 85) Convert 5C to Fahrenheit. 86) Convert 65C to Fahrenheit. 87) Convert 132C to Fahrenheit. 88) Convert 19C to Fahrenheit. Mixed Exercises Fill in the blank with the appropriate metric unit. Choose from mm, cm, m, km, mL, L, mg, g, and kg. 89) The diameter of a DVD is 120 . 90) The glass contains 350 of orange juice. 91) Heinrich’s car weighs 1620 . 92) Tina’s bedroom is 4.5 wide. 93) The aquarium in Celina’s house holds 75 of water. 94) A kitten weighs about 100 at birth. (http://veterinarymedicine.dvm360.com) Convert to the indicated unit. 95) 2.25 L to milliliters 96) 0.6 kg to grams 97) 48 cm to meters 98) 1294 mm to meters Use the metric conversion chart to change to the indicated unit. 59) 9750 g to kilograms 60) 8140 g to kilograms 61) 0.02 kg to milligrams 62) 0.06 kg to milligrams (7.4) Perform the indicated operation. 63) Divide 48 g by 8. 64) Multiply 0.05 mL by 4. 65) 7 m 47 cm 66) 0.09 g 37 mg Solve each problem. 67) If Ruby cuts off 85 cm from a piece of fabric measuring 2 m 50 cm in length, how long is the remaining piece, in centimeters? 68) Danny cuts a metal pipe measuring 1 m 80 cm into three equal lengths. Find the length of each piece, in centimeters. 69) Masa harina costs about $3.98/kg. Lupita’s tortilla recipe uses 250 g of the fl our and makes about 15 tortillas. If she wants to make 120 tortillas so that she can share them with friends and family, fi nd the cost of the masa harina. 70) Davida’s 50-mL pump spray perfume bottle delivers 0.1 mL of her favorite perfume per stroke. If she applies the perfume twice a day, how many days will the bottle last? (7.5) For Exercises 71–78, convert to the indicated unit. 71) During the 2010–2011 season, the year the Green Bay Packers won Super Bowl XLV, quarterback Aaron Rodgers threw for 3922 yd. Convert this number to meters. Round to the nearest meter. (www.packers.com) 72) According to the Guinness World Records, the world’s tallest man was about 2.7 m tall. Convert this number to feet. (www.guinnessworldrecords.com) 73) Ralph caught a lake trout that weighed 11 kg. Convert this number to pounds. Round to the nearest tenth. www.mhhe.com/messersmith CHAPTER 7 Review Exercises 489
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