寻找规律的题目,贯穿于初中数学的始终,在中考题中常常以选择题的形式出现,解决这类题的主要方法是寻求序数与其对应的数之间的联系,从而探索出规律.在这类题中有的是直接求法,有的是间接求法.下面摘取几例,以供大家研究探讨.一、寻求各数与其序数之间的关系1.直接求法 The problem of searching for regularities runs through middle school maths and often appears as a multiple choice question in the middle school entrance examination questions. The main way to solve these problems is to find the connection between the ordinal numbers and their corresponding numbers, so as to explore the law. Some of the questions in the direct method, some are indirect method .Several examples below, for your study. First, to seek the relationship between the number and its ordinal 1. Direct method