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'll move it 5 places to the right: 5.16
2. Count the moves: You moved the decimal point 5 places to the right, so the exponent of 10 will be -5.
3. Round to 3 significant figures: The number 5.16 already has 3 significant figures.
Therefore, 0.0000516 in scientific notation to 3 significant figures is 5.16 x 10⁻⁵
