分数乘法是在学习了整数、小数乘法、分数的意义、性质及分数加法的基础上学习的。这部分知识的学习,不仅可以解决一些实际问题,而且为今后学习分数四则混合运算,解分数乘除法应用题、百分数应用题都具有重要作用。 本单元教材分为三大部分。第一部分是分数乘以整数;第二部分是一个数乘以分数;第三部分是 The fractional multiplication is learned on the basis of learning integers, fractional multiplications, the meaning, nature and fractional addition of fractions. This part of the knowledge of learning, not only can solve some practical problems, but also for the future learning scores four mixed operations, solution multiplication and division of application questions, the percentage of application questions are an important role. The unit textbook is divided into three parts. The first part is the fraction multiplied by an integer; the second part is a number multiplied by the fraction; the third part is