“倍”概念一船是随倍数应用题的教学出现的。教学中,由于没有把“倍”这个基本概念作为重点,深入讲解、练习,导致学生对“倍”的概念模糊,对三种类型的倍数关系应用题不理解,出现见“倍”字就乘的现象。尤其是在解答“已知一个数的几倍是多少,求这个数”(即求一倍数)一类题时,错误 “Times” concept of a ship is multiplied with the application of the question of teaching appeared. In teaching, since the concept of “times” is not emphasized as the focus, in-depth explanation and practice lead to the students' ambiguity in the concept of “times,” the application of the three types of multiple relations does not understand, The phenomenon. In particular, when answering the question of “what is the number of times a given number is known?”