Question

How do you write `19,000` in standard notation?

Answer 1

`19,000" "` is written in standard notation.

`1.9 * 10^4 " "`is written in scientific notation

Explanation:

In expanded notation, it would be
`10,000 +9,000`

or `1 xx 10,000 + 9 xx 1,000`

You can write this with powers, too
`1*10^4 +9*10^3`

The number can also be written as `1.9 * 10^4` in scientific notation.