求比一个数多（少）几的数的应用题,分为正叙和反叙两种类型。根据低年级学生的心理特点及生活经验,他们在理解反叙的求比一个数多（少）几的数的应用题时比正叙的要难,因此,这是二年级数学教学中的一个难点。怎样突破这个难点呢？一、让学生理解应用题的结构特点无论是正叙还 Comparison of a number of more (less) the number of applications, divided into two types are the main Syria and anti-Syria. According to the psychological characteristics and life experience of the lower grades students, they are more difficult to understand than the Syracuse when they apply the anti-narrative comparisons to a few (less) numbers, so this is one of the second-grade maths teaching difficulty. How to break through this difficulty? First, to enable students to understand the structural characteristics of the application questions either reclassified