\(4.0 \times 10^{-6} \text{ and } 2.0 \times 10^{-7}\)
Scientific Notation
Express how much larger numbers in scientific notation are
First, find the largest number in each pair of numbers, then identify how much larger it is compared to the smaller number.
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 times 108 and the population of the world as 7 times 109, and determine that the world population is more than 20 times larger.