Restrict her from using the calculator as soon as possible. It is not good for her to use this when she is a beginner, and she will have the idea of dependence. It's almost time to learn multiplication and division in grade three, but it's a bit slow to learn fluency in grade four. You can be strict with her at ordinary times. For example, you can ask her to recite it for you at least once a day. You can pinch your watch and make it speed up at least a little every day or week. Of course, you have to make sure she's okay first. Give me some appropriate punishment measures. My parents used to make me recite the multiplication table. If I made a few mistakes, I copied the watch several times and stared at me after reading it. If the reciting time is much worse than last time, I will copy it.

I think it is very useful to buy some special exercise books. Don't let her spend time writing with a calculator. Write a few pages a day and practice more.

There may be other reasons why you can't get the exam results. Many children are careless in doing problems, but this can only be solved by doing more problems. Don't worry too much. The questions in primary school are not difficult. She will learn when she is older. Maybe you can sign up for a cram school, just be careful not to make the children too tired.

If you are satisfied with the answer, I hope to adopt it!