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1、,义务教育实验教科书人教版三年级上册,多位数乘一位数 整理和复习,209=,8976=,4232=,6089=,4607=,9162=,738=,3973,7008=,498,209=,8976=,4232=,6089=,4607=,9162=,1832,738=,584,846,180,3220,5382,5472,3973,1200,7008=,5600,498,400,多位数乘一位数,口算乘法,笔算乘法,整十整百数乘一位数,估算,不进位,进位(连续进位),307=,5008=,6004=,210,2400,4000,796,4038,480,3200,1232=,4937=,2903=,
2、3451,638=,3084=,246,解决问题我能行!,(3)如果再去爬泰山,门票价格每人127元,还要花多少钱?,(1)临沂到泰安距离196千米,徐老师来回的路程大约多少千米?,(2)泰安方特欢乐世界的每张门票价格是200元,徐老师一家6人同去,买票要花多少钱?,估算,1962400(千米),口算,2006=1200(元),笔算,1276=762(元),一、口算。607=8005=495 2877 二、笔算。6945=5808=774=3056=三、我是小法官。两个数的积一定大于这两个数的和。()一个因数的中间有0,积的中间也一定有0。()1997的积大于1400。()因为684接近700
3、,所以6843的积大约是2100。()0与任何数相乘、相加都得0。()四、解决问题。1、我国发射的第一颗人造地球卫星,绕地球一周的时间是114 分,绕地球9周要用多少分?2、人民公园每天有407人来参观。照这样计算,一个星期大约有多少人来参观?3、果园里有桃树153棵,苹果树是桃树的3倍。苹果树有多少棵?,我学会了吗?,拔萝卜。,4003,2个,积的末尾有几个0?,5006,3个,1504,2407,积是几位数?,三位数,四位数,4412,5873,282,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,