How do you write the standard number 0.32 in scientific notation?

3.2 × 10-4
3.2 × 10-5
3.2 × 10-7
32 × 10-4

I think the correct answer from the choices listed above is the second option. To start the standard number 0.000032 in scientific notation we move the decimal point to the right until number 3. This gives us a value of 3.2 × 10^-5. Hope this answers the question.