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. *For example, estimate the population of the United States as 3 *× *108 and the population of the world as 7 *× *109, and determine that the world population is more than 20 times larger.*

**8.EE Expressions and Equations**

**8.EE.A** *Work with radicals and integer exponents.*