First, it will limit children's thinking. If you always want to see the answers before doing math problems, you may know that the improvement will be quick and the accuracy will be high, but you should know that doing math problems requires more thinking. If you don't even think about it, just look at the answer, then anyone can get 100, but there is no answer in the exam. You also need to think independently, and no one is around to help you, so you must cultivate the opportunity to think independently first, and don't always look at the answers, otherwise you can work it out quickly even if it is difficult. Mathematics questions are different from Chinese questions and English questions, which require strong logical thinking ability. Only by mastering the previous knowledge can we work out the answers to these questions. Moreover, there may be several solutions to mobile math problems. You will only think that there is only one answer, and then you can't think of other solutions without too much thinking.
Second, students are less and less fond of using their brains to do math problems. They need to learn from what they have learned in the past and then continue to think for themselves. Maybe they will find it difficult to read the questions and can't think of any knowledge points. But if you read the questions several times, you will have a general review of the knowledge points you have learned before. Then I can apply what I have learned when I do the problem. If some students look at the answers directly, it will make everyone think little and can't review what they have learned before, so it is meaningless to do such a question.