This situation is mainly because I have not been exposed to similar problems and have no idea to solve them at all. Many people who are good at math are not smart, but they are good at summarizing questions. For the same type of mathematical problems, they can use similar problem-solving methods to get the results.

Don't blame her or say something frustrating when she can't do math problems. You can find a good teacher, or parents can teach her bit by bit after they understand the topic. First of all, we should teach her how to solve problems and guide her thinking step by step in an easy-to-understand way; Then write down the steps to solve the problem step by step. Be sure to let her write it herself, which will deepen her impression. Besides, understanding doesn't mean she can do the problem, so let her write it often. Finally, leave some similar math problems for her to practice. On the one hand, it will consolidate the knowledge she has just learned, on the other hand, it will help her learn to draw inferences to solve the same type of problems, on the other hand, it will also cultivate her self-confidence and help her overcome her fear of difficulties at the sight of math problems.

In this way, she will study the subject of mathematics slowly.