“整数和整数四则运算”这部分内容是建立在学生前三年学过的有关整数和四则运算的基础上的，它又是学生系统学习后面小数、分数及中学阶段数学的基础知识。教学时，教师要根据教材的特点，全面掌握教材的知识结构，明确具体的教学要求并结合教学内容有意识地培养学生的能力，? “Integer and integer four operations” This part is based on the first three years of study students learned about the integer and four operations, it is the student system learning behind the decimal, fractional and secondary school mathematics basic knowledge. Teaching, teachers should according to the characteristics of teaching materials, a comprehensive grasp of the knowledge structure of teaching materials, a clear specific teaching requirements and teaching content consciously develop students' abilities?