1. Move the decimal point to the right until you have a number between 1 and 10. In this case, we need to move the decimal point one place to the right: 7.0010

2. Count the number of places you moved the decimal point. Since we moved it one place to the right, the exponent will be -1.

3. Write the number in the form of a x 10^b, where 'a' is the number between 1 and 10, and 'b' is the exponent.

Therefore, 0.70010 in scientific notation is 7.0010 x 10^-1.