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至此,我们已经学习了很多代数知识上的重要概念和方法,在即将进入八年级的学习阶段前,有必要进行回顾,加深对它们的理解.一、数轴数轴是规定了原点、正方向和单位长度的一条直线,所有的有理数和无理数都可用数轴上的点表示.在数轴上表示的两个数,右边的点所表示的数总是比左边的点所表示的数大.1.在数轴上标出表示下列各数的点,并用“<”把它们连接起来.
So far, we have learned a lot of important concepts and methods of algebraic knowledge, and it is necessary to review and deepen our understanding of them just before entering the eighth-grade learning phase.First, the axis of the number of axes specifies the origin, the positive direction and the unit Length of a straight line, all the rational and irrational numbers can be used to point on the axis of that number on the axis of the number of two, the right point that the number of points is always greater than the number of points on the left 1. In the number of axes Mark points that indicate the following numbers, and use “<” to connect them.