练习是数学教学必不可少的一个有机组成部分。学生通过适当的练习,掌握基础知识和基本技能,提高对数学思想的认识,优化思维品质。初中数学练习,通常包括课堂练习、课后练习(作业)和常规的测试(如小测 Exercises are an integral part of mathematics teaching. Students through the appropriate practice, master the basic knowledge and basic skills, improve understanding of mathematical thinking, optimizing thinking quality. Junior high school math exercises, usually including classroom exercises, after-school exercises (homework) and routine tests (such as small test