I understand your dilemma, which is also the same problem for many smart students. Many students are indifferent to their carelessness, thinking that they will pay attention to the exam and will not make mistakes every time. In fact, it is not the case at all! The college entrance examination is different from a competition. The college entrance examination is not only to examine your mathematical thinking ability, but also to examine your carefulness. Did you notice the details? That's your problem: ignore the details! Generally speaking, after one year of intensive training in senior three, the gap between students' abilities has been very small, and there are few real questions in the college entrance examination papers. So in general, the key point of the college entrance examination is whether you have good problem-solving habits and pay attention to details. You must not lose the points you deserve.
So much has been said above just to draw your attention to your carelessness. You don't need to panic. After all, you have a foundation in mathematics, and you are aware of your own problems, which is good! Here are some suggestions for you, which may not all apply to you, but you can try:
1, put down your questions and don't spend all your time thinking about them. Although you will feel a sense of accomplishment when you solve a difficult problem, what is that compared with the score you lost? Find some calculation problems with moderate difficulty, preferably complicated ones, and do special training. Score yourself and see if there is progress every time ~ ~
2. Check your test mentality. Do you get nervous? Otherwise, how could you copy all the questions wrong?
3. Give yourself a lower position. Although I know you are good at math, if you always subconsciously say to yourself: I am so good at math, why did I get such a low exam? Then you will always be in such a tangled whirlpool (I used to be like this). So you might as well regard yourself as the same level as those students who ask you questions, as if you were on the same starting line with them, and then make progress little by little ... That will also give you a sense of accomplishment and enhance your confidence. ...
Finally, send you a sentence: details determine success or failure! (A very practical sentence ...)
Finally, I wish you to cross the careless hurdle and become the first!