Why is scientific notation a good tool?
Because it allows people to write otherwise unreasonably long numbers in a much smaller space, and still be able to understand them, and calculate with them.
What is a synonym for scientific notation?
In Britain, scientific notation is known as "standard form."
Trying to find the variance of 10-6 divided by 6 square 2?
A single number cannot have a variance.
A single number cannot have a variance.
A single number cannot have a variance.
A single number cannot have a variance.