Scientific SI Prefixes
In all of science, there are prefixes which are used to are attached to units in order to have a word representation of having differing multiples of 10. An example of this is the fact that a kilometer is one meter times 1000, or one meter times "three multiples of 10" ($10^3$). We can also go the other way; a millimeter is one meter divided by 1000, or one meter divided by "three multiples of 10" ($10^3$). When we have a situation of "divided by $10^3$", as mentioned in the Algebra Lecture Series, it is equivalent to saying "multiplied by $10^-3$". Notice that the "divided by" has a positive exponent while the "divided by" has a negative exponent. That stems from the exponent subtraction rule in Algebra. Here's the list of all of the prefixes and what they represent in two numeric forms: Prefix Symbol Multiplier Exponential yotta Y 1,000,000,000,000,000,000,000,0