It is recommended to start from the first grade. Primary school is mainly about calculation and thinking. From the first grade, you will come into contact with real mathematical theorems.

Pay attention to the method when learning:

1, on this basis, master the basic knowledge;

2. Do a good job in knowledge points and sort out difficulties;

3. Make a mind map of each unit to ensure that you master book knowledge;

4. Do more hands-on verification of mathematical formulas, and get better results through practice than rote memorization;

5, do more questions, not brush questions, but see why the teacher wants to ask questions, what knowledge points he wants to test, and what knowledge points can be combined.