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,*,分数乘整数,小学数学(人教版)六年级 上册,人跑,3,步的距离是袋鼠跳一下的几分之几?,11,2,11,2,11,2,人跑一步的距离相当于袋鼠跳一下的,11,2,?,求几个相同加数的和,用乘法计算比较简便。,人跑,5,步的距离是袋鼠跳一下的几分之几?,分数乘整数,用分子与整数相乘做分子,分母不变。,试一试,=,9,4,3,4,4,1,6,8,3,=,=,8,3,6,4,3,1,1,24,15,15,8,=,=,=,58,12,2,3,=,3,10,=,1,2,23,4,=,2,3,15,2,4,12,5,8
2、2,4,3,做一做,1,、,2,、一袋面包重,kg,。,3,袋面包重多少千克?,10,3,10,3,10,3,10,3,+,+,=,10,9,(千克),=,3,10,3,10,9,(千克),看谁算的又对又快,3,1,3,8,7,6,3,11,6,5,答:,10,只树袋熊一星期大约能吃,60,千克桉树叶。,10,6,=,(千克),60,(千克),=,10,7,6,7,6,10,=,7,60,1,7,7,60,=,=,(千克),60,7,60,7,1,=,=,6,7,6,7,(千克),1,7,6,7,1,100,7,50,=,100,7,50,1,2,=,7,2,(,米,),100,7,100,=,100,7,100,1,1,=7(,米,),答:,50,年它能长高 米,,100,年它能长高,7,米。,7,2,(勺),1,2,5,15,2,5,2,=,=,答:一共要放 勺洗衣粉。,5,2,