Use unit fractions to change to the indicated unit. 25) 631 mm to meters 26) 892 m to kilometers 27) 1.2 km to meters 28) 5.75 m to centimeters Use the metric conversion chart to change to the indicated unit. 29) 7 m to centimeters 30) 4 m to millimeters 31) 96.5 mm to meters 32) 28.3 m to kilometers 33) 0.8 km to centimeters 34) 0.7 km to millimeters (7.3) For Exercises 35–38, determine which unit of metric unit of capacity would be more appropriate for each situation. Choose from mL and L. 35) The amount of gas it takes to fi ll a car’s tank 36) The amount of water used to do dishes in the kitchen sink 37) The amount of milk in a baby bottle 38) The amount of soup in a can Use unit fractions to convert to the indicated unit. 39) 3.25 L to milliliters 40) 4.75 L to milliliters 41) 140 mL to liters 42) 290 mL to liters Use the metric conversion chart to change to the indicated unit. 43) 630 mL to liters 44) 850 mL to liters 45) 2 L to milliliters 46) 9 mL to milliliters Fill in the blank. 47) g 1 kg 48) 1000 mg g For Exercises 49–52, fill in the blank with mg, g, or kg. 49) The tablet contains 200 of ibuprofen. 50) A female elephant can weigh about 3500 . 51) Jada’s backpack weighs 4 . 52) The strawberry weighed 23 . Use unit fractions to convert to the indicated unit. 53) 82 mg to grams 54) 61 mg to grams 55) 13 kg to grams 56) 22 kg to grams 57) 4 1 2 g to milligrams 58) 7.9 g to milligrams 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. 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. www.mhhe.com/messersmith CHAPTER 7 Review Exercises 619
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