Numbers that are very large or very small are expressed in scientific notation, in terms of powers of ten:
The rules for multiplying or dividing numbers in scientific notation are as follows:
General rules for quantities that have exponents are as follows:
Lastly, the inverse of exponents is logarithms, used to quickly manipulate large or small numbers:
Converting scientific notation to English requires the use of the following prefixes or suffices:
An interesting display of powers of ten with respect to the size of atoms to galaxies, can be found here.