# Why use standard (index) form for large numbers?

**Example 1 **

It makes long distances easier to understand

At the furthest point of its orbit Pluto is over 4,583,000,000 miles from the sun. This can be written in standard form as `4.583times10^9` miles.

**Example 2 **

It makes large numbers easier to understand

The world population is:

`7.4times10^9` people

Or

7,400,000,000 people

Which is easier to understand?

We think `7.4times10^9` people.

**Example 3 **

It makes large masses easier to understand

The mass of the Earth is

`6times10^24` kg

Or

6,000,000,000,000,000,000,000,000kg

Or

6 Sextillion kg

Which is easier to understand?

We think `6times10^24` kg

# Why use standard (index) form for large numbers?

**Example 1 **

It makes long distances easier to understand

At the furthest point of its orbit Pluto is over 4,583,000,000 miles from the sun. This can be written in standard form as `4.583times10^9` miles.

**Example 2 **

It makes large numbers easier to understand

The world population is:

`7.4times10^9` people

Or

7,400,000,000 people

Which is easier to understand?

We think `7.4times10^9` people.

**Example 3 **

It makes large masses easier to understand

The mass of the Earth is

`6times10^24` kg

Or

6,000,000,000,000,000,000,000,000kg

Or

6 Sextillion kg

Which is easier to understand?

We think `6times10^24` kg