1. Move the decimal point:
Start with the original number: 0.00809
Move the decimal point to the right until you have a number between 1 and 10: 8.09
2. Count the decimal places:
You moved the decimal point three places to the right.
3. Express the number in scientific notation:
The number becomes: 8.09 x 10⁻³
Therefore, 0.00809 in scientific notation is 8.09 x 10⁻³