1. Move the decimal point to the left until there is only one non-zero digit to the left of the decimal point. In this case, we move it two places to the left: 1.025
2. Count the number of places you moved the decimal point. We moved it two places.
3. If you moved the decimal point to the left, the exponent is positive. If you moved it to the right, the exponent is negative. Since we moved it left, the exponent is positive.
4. Write the number in the form a x 10^b, where 'a' is the number with one non-zero digit to the left of the decimal point and 'b' is the exponent.
Therefore, 102.5 in scientific notation is 1.025 x 10².
