1. Move the decimal point:

* Move the decimal point to the left until you have a number between 1 and 10. In this case, you'll move it two places to the left: 5.678

2. Count the decimal places:

* You moved the decimal point two places to the left, so the exponent will be 2.

3. Combine the parts:

* The number in scientific notation is 5.678 x 10²