1, practice sensitivity to numbers. Specifically, seeing a number needs to be able to split it in different ways. For example, 7 = 8-1= 2 3-1= 2 * 3+1= 2 2+3 = 2 * 2+3 and so on.

2. There is nothing wrong with quick calculation.

3, master some quick calculation skills, which is very useful when doing data problems.

4. Master more formulas. Different topics have different routines and methods, some of which are summed up by others, and some of which are summed up to suit them.

5. Classify the math problems, read more and remember more when you have time. What you summarized is the most useful. Some questions can be discussed with friends, so remember them better.