中考试卷中,常出现计算型的选择题,有时还把这类题目当作压轴题,确实这类题很能考查学生的能力,若按步就班解题既耗时又难以准确,若利用巧解将会起到事半功倍的好效果,如何运用巧解,关键在 In the examination paper, there are often multiple-choice questions, and sometimes these questions are regarded as final questions. It is true that such questions can be used to examine students’ abilities. If questions are taken step by step, solving problems is time-consuming and difficult to accurately use. Clever solution will play a good effect with less effort. How to use clever solutions is the key