It depends on the requirements of changing paper. In general, it depends on what kind of problem it is. What is the score? Topic requirements! The general process will be graded. If the integrity is good, you can't deduct too much. For example, the application problem is 5 points, and the problem has no specific requirements (such as: column equation, short division, etc.). ), the answer is also written. . . . . . This will deduct 3 points. If you don't answer, deduct 4 points. You need not worry too much. Just be careful next time, the details determine success or failure. Don't underestimate these dots.