Standard
Use numbers expressed in the form of a single digit times an integer power of 10 to estimate very large or very small quantities, and to express how many times as much one is than the other. <span class='clarification'>For example, estimate the population of the United States as 3 \times 10^8 and the population of the world as 7 \times 10^9, and determine that the world population is more than 20 times larger.</span>