The first chapter is rational number, which mainly examines the understanding of concepts-positive number, negative number, absolute value, reciprocal, reciprocal, significant number, divisor, and other basic calculations-addition, subtraction, multiplication, division and power mixing operation.

The second chapter, the addition and subtraction of algebraic expressions, will mainly distinguish between single item, degree and coefficient; Polynomial terms, degrees, and then simplify the calculation-remove brackets, merge similar terms, and substitute for evaluation.

Chapter 3: One-dimensional linear equations should be able to solve simple equations, and the application should not be in the previous period.