A skyscraper has a mass of 2.2 times 10^5 tons. Another skyscraper in the same town has a mass of 3.7 times 10^5 tons. What is the combined mass, in tons, of the two skyscrapers? Use scientific notation to express your answer to 1 decimal place.

Answer 1

To find the combined mass of the two skyscrapers, we add their masses together.

Combined mass = 2.2 x 10^5 + 3.7 x 10^5
Combined mass = 5.9 x 10^5

Therefore, the combined mass of the two skyscrapers is 5.9 x 10^5 tons, or 5.9 million tons.