绝对值是整个中学数学的重要内容之一,更是七年级数学的一个重要概念。为了帮助同学们更好地巩固这一内容,现从以下几方面分析。一、解读绝对值的两种定义1.几何定义在数轴上,表示数a的点到原点的距离叫做a的绝对值,记为|a|。因此,要求一个数的绝对值,可以先将这个 Absolute value is one of the important contents of the whole middle school mathematics, and it is an important concept of seventh grade mathematics. In order to help students better consolidate this content, it is analyzed from the following aspects. First, the interpretation of the two definitions of absolute values ​​1. Geometry defined on the axis, the distance from the point a to the origin of the number a is called the absolute value of a, recorded as |a|. Therefore, the absolute value of a number is required, and this can be first