Is 0.25 rounded to 0.3

Yes. 5 and over is rounded. i think of it as five or more, raise the score

If you are rounding to the tenths place, then yes, because the number after the tenths places is a 5, and the rule is if the number to the right is a 5 of bigger, then you round up, it smaller than 4, you round down. In this case, this is a 5, so the answer would be 0.3