Answer:
1.10×10^24 kg
Step-by-step explanation:
(5.97×10^24 kg) - (4.87×10^24 kg) = (5.97 -4.87)×10^24 kg = 1.10×10^24 kg
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4,870,000,000,000,000,000,000,000 = 4.87×1,000,000,000,000,000,000,000,000 = 4.87×10^24
For addition and subtraction, the numbers need to be adjusted so they are multiplied by the same power of 10. Here, the most significant digits of each of the numbers are in locations that have the same place value, so that is not difficult.
