Scientific Notation and Standard Form

One ounce of gold can be made into a wire that is $$8\times10^4$$ m long.

What is the length of the wire in standard form?

One ounce of gold can be made into a wire that is $$5\times10^{-6}$$ m thick.

What is the thickness of the wire in standard form?

On average, Neptune is about $$2.795\ \times10^5$$ m from the sun.

What is the distance in standard form?

Which expressions are NOT written in scientific notation?

Write the following number in standard form. Type your answer with no spaces and no commas.

$$5.7\times10^{-1}$$  

Which of the following numbers is written in scientific notation?

If the exponent in scientific notation is a positive number the standard form will be ___.

If the exponent in scientific notation is a negative number the standard form will be ___.