Question

A state park has two pools. The olympic size pool holds 8.12 x 10^5 gallons of water and the smaller pool holds 5.27 x 10^5 gallons of water. What is the combined capacity of the pools?

A) 1.339 x 10^4 gallons
B) 1.339 x 10^6 gallons
C) 13.39 x 10^10 gallons
D) 1.339 x 10^10 gallons

Answer 1

B) 1.339 x 10^6 gallons. When you add 812,000 to 527,000 you get 1,339,000, and to write that in scientific notation you need to make the number less than 10 and more than 1, which is 1.339 and to get the 1,339,000 you need to multiply 1.339 by 10^6.