Question

How do you write 0.005 km mg in scientific notation?

Answer 1

`5.0 times 10^-3 km`

Explanation:

Express `0.005` as a number between `1and 10.`

`5.0`

Count how many places, you moved the decimal point to do this.

It was moved `3` places to the right which gives you `-3` as the power for `10`.

`10^-3`

Therefore `5.0 times 10^-3`.

Note: If you are converting a number such as `5000` to scientific notation, again express it as a number between `1 and 10` but because you have moved the decimal point to the left, the power of 10 is positive.

`5.0 times 10^3`