1. Move the decimal point:

Start with 0.009402 and move the decimal point to the right until you have a number between 1 and 10. In this case, we need to move it three places to the right: 9.402

2. Count the moves:

We moved the decimal point three places to the right. Since we moved it to the *right*, the exponent will be negative.

3. Write the notation:

The scientific notation is 9.402 x 10^-3