1. Move the decimal point:
Move the decimal point to the right until you have a number between 1 and 10. In this case, you'd move it five places to the right:
0.000075 -> 7.5
2. Count the decimal places:
You moved the decimal point five places to the right.
3. Express it in scientific notation:
The scientific notation is: 7.5 x 10^-5
Explanation:
* 7.5 is the number between 1 and 10 that you obtained.
* 10^-5 represents the number of places you moved the decimal to the right. A negative exponent indicates that the original number was less than 1.