Mathematics is a highly cohesive subject. The second volume of Grade 6 will definitely have the title of the first volume, but it will not be the original title. For example, low-level operations such as addition, subtraction, multiplication and division in primary schools have been used until now, and the first volume of the sixth grade will be closely related to the second volume. As a student who is about to enter junior high school, whether the sixth grade is the first volume or the second volume, it will be the focus of the exam. Therefore, it is necessary to learn them well. You can spend more time reviewing by yourself or ask a teacher for help. Work hard and good luck!