# How do you write 540 in scientific notation?

##### 1 Answer

#### Answer:

#### Explanation:

The purpose of scientific notation is to write very small or very large numbers in a shorter more comprehensible form.

For instance, US debt is now about $18 trillion. This huge number looks like

Too many zeroes, is not it.

Say, you want to compare it with the distance from Earth to Sun, which is

Also a lot of zeroes.

To easier see the magnitude of a number it is represented in scientific notation as a number from 1 to 10 multiplied by a number 10 in some power.

Thus,

Now it's obvious that the first number more than in *mantissa*, (*exponent*, are significantly different, one is