Haidian 2022 math midterm is not difficult. The difficulty of the seventh grade math test varies from school to school, and the difficulty varies from school to school, but we should pay attention to the study of the first grade. The main content of learning before the mid-term exam is the addition, subtraction, multiplication and division of rational numbers, or the operation with letters in algebraic expressions. If all the methods are mastered, the exam will not be difficult.