* Move the decimal point to the right until you have a number between 1 and 10. In this case, we move it one place to the right, giving us 3.45.
* Count how many places you moved the decimal. We moved it one place to the right.
* Multiply the new number by 10 raised to the power of the number of places you moved the decimal, but with a negative exponent. Since we moved it one place to the right, the exponent is -1.
Therefore, the scientific notation of 0.345 is 3.45 x 10-1.
