1. Move the decimal point to the right until you have a number between 1 and 10. In this case, you'd move it one place to the right, resulting in 6.5.

2. Count the number of places you moved the decimal point. You moved it one place to the right.

3. If you moved the decimal to the right, the exponent of 10 will be negative. If you moved it to the left, the exponent would be positive. Since we moved it right, the exponent will be -1.

Therefore, 0.65 in scientific notation is 6.5 x 10^-1.