The mass of a freight train is 9.98 â‹… 106 kilograms. The mass of an aircraft carrier is 7.3 â‹… 107 kilograms. Approximately how many more kilograms is the mass of an aircraft carrier than the mass of a freight train? Show your work and write your answer in scientific notation.
mass of freight train: 9.98 • 106 = 1057.88 kg mass of aircraft carrier: 7.3 • 107 = 781.1 kg difference: 1057.88 - 781.1 = 276.78 kg = 2.7678 x 10^2
