1. Understanding and operation of numbers: including the understanding and operation of integers, fractions and decimals, as well as the laws and properties of the four operations.

2. Algebraic expressions and equations: including simplification of algebraic expressions, combination of similar items, factorization, etc. , and the solution and application of linear equation and quadratic equation.

3. Geometry and space geometry: including the nature and calculation of plane graphics (such as triangle, quadrilateral, circle, etc.). ), the properties and calculation of three-dimensional graphics (such as cuboid, cube, cylinder, cone, etc.). ), and the concepts of distance and angle in space geometry.

4. Data and statistics: including the collection, arrangement and representation of data (such as bar charts and line charts), as well as the calculation and application of statistics (such as average, median and mode).

5. Probability statistics: including the basic concept, calculation and application of probability, as well as sampling survey and sample estimation population in statistics.

6. Function and image: including the definition, nature and classification of function, as well as the drawing and analysis of function image.

7. Solving practical problems: including using mathematical knowledge to solve practical problems in life, such as area calculation, volume calculation and profit calculation.

In the process of preparing for the exam, we should pay attention to the study and consolidation of basic knowledge and improve the ability and speed of solving problems through a large number of exercises. At the same time, we should pay attention to cultivate good study habits and methods, such as regular review, summary and induction, checking for missing parts, etc., to improve the learning effect.