1、单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,分数乘法,山东省泰安师范附属学校 刘万元,你能提出什么问题?,1,1,1,1,1,5,1,5,1,2,每小时织 米,,小时织多少米?,1,2,1,5,分,取,再分,再取,1,5,1,5,的,1,5,1,2,1,1,5,的,2,3,1,5,1,5,2,3,3/5,、,3/4,每小时织 米,,小时织多少米?,2,3,1,5,李丽,每小时织,米,。,小时织多少米?,3,4,3,5,3,5,3,4,3,5,的,3,4,3
2、5,1,5,1,2,1,5,2,3,3,5,3,4,1,5,求 的 是多少。,1,2,一个数乘分数,实际就是求,这个数的几分之几是多少。,1,5,求 的 是多少。,2,3,3,5,求 的 是多少。,3,4,7,125,3,8,1,1,1,1,4,7,3,5,7,5,分,取,分了再分,取了再取,4,3,7,5,4,3,7,5,=,12,35,=,4,3,7,5,7,5,1,3,7,5,8,5,8,3,7,=,5,3,8,7,5,3,8,7,5,8,的,3,7,15,56,=,分子相乘,分母相乘,4,7,3,5,=,4,3,7,5,5,8,3,7,=,5,3,8,7,一共分了多少份,最终取了多少份,7,66,11,14,回顾,5,9,7,8,练习,3,练习,3,回顾,3,3,2,9,4,1,8,9,2,9,4,8,9,回顾,练习,2,1,5,1,2,1,5,2,3,3,5,3,4,形,结,合,1,5,1,2,1,5,2,3,3,5,3,4,数,形,数,形,数,数,数,形,形,4,7,3,5,5,8,3,7,4,7,3,5,5,8,3,7,回顾,