# What is an example of a scientific notation?

##### 1 Answer

Mar 25, 2015

Numbers in scientific notation look like

As you may know

so the two examples above would be:

Scientific notation is used when really great or really small numbers are involved. In stead of writing out all these zeroes, when you can easily make a mistake in counting.

You wouldn't want to write out the number of molecules in a mole:

The rule is that (in almost all cases, *except sometimes in tables* ) the

So you wouldn't write the first example as