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1、,义务教育北师大版三年级上册,练习五,第六单元,乘法,156,90,1.,圈一圈,算一算。,244,96,2.,填一填。,544,50,4,4,919,200,16,200,16,216,90,1,9,810,9,810,9,819,216,819,1027,100,2,7,700,14,700,14,714,714,3.,算一算,说一说。,543,203,60,(只),54,3,20,3,23,(只),一共有多少只小鸡?,一共有多少只小鸭?,答:,一共有,60,只小鸡。,答:,一共有,23,只小鸭。,4.,3006,156,3156,4007,77,4077,1800,90,1890,280
2、0,49,2849,5003,403,5403,1500,120,1620,5.,用竖式计算,说一说竖式每一步的意思。,2164,538,864,424,8,4,2,6,1,4,6,2,5,8,3,4 2,4,2,4903,6075,1470,3035,4,3,9,0,1 4,7,2,0,6,5,0,7,3 0,3,3,5,1,6,0,4,6,2,4,0,4,0,2,5,3,4,5,1,4,5,6.,森林医生。,1,1,5,2,0,6,0,0,834,24,96,4,7.,算一算,比一比,你发现了什么?你能写出两组类似的题目吗?,126 162,145 154,254 245,165 156,
3、8.,哪两个数相乘的积最接近圈中的数?把它们连起来。,9.,这些南瓜能一次运走吗?,658,520,(个),510,个,520,个,答:这些南瓜能一次运走。,58,40,(元),885,440,(元),40,440,480,(元),480,元,500,元,答:,500,元够,实际花了,480,元。,10.,胜利小学,5,名老师带领,88,名学生参观科技馆用,500,元买门票,够不够?实际花了多少钱?,成人票8元,学生票5元,11.,(,1,)奇思一家买票共需要多少元?,2142,107,428,107,535,(元),答:奇思一家买票共需要,535,元。,成人票214元,儿童票107元,D20
4、31,北京西,郑州东,(,2,)阳光小区共有多少户居民?,2538,758,600,(户),答:阳光小区共有,600,户居民。,每个单元25户居民,阳光小区有8栋这样的居民楼。,12.,(,1,)奇思,5,分能打多少个字?,417,287,(个),(,2,)一篇稿件共,325,个字,奇思,7,分能打完吗?,415,205,(个),答:奇思,5,分能打,205,个字。,我每分打41个字。,答:奇思,7,分不能打完。,325,个,287,个,(,3,)妙想每分比奇思多打,6,个字,她,7,分能打完这篇稿件吗?,(,41,6,),7,47 7,329,(个),答:她,7,分能打完这篇稿件。,329,
5、个,325,个,13.,小马每天从家出发驮着粮食去磨坊,先上山,要走,9,分,走,630,米;再下山走,8,分到达磨坊。,(,1,)你知道了哪些数学信息?说一说,画一画。,上山要走,9,分,走,630,米;,下山每分走,90,米,要走,8,分。,下山每分走,90,米,(,2,)小马,8:00,出发,,5,分后大约走到什么位置?在图中标出来。,630,9,5,350,(米),下山每分走,90,米,(,3,)小马每天从家去磨坊要走多少米?,630,890,630,720,1350,(米),答:小马每天从家去磨坊要走,1350,米。,13.,小马每天从家出发驮着粮食去磨坊,先上山,要走,9,分,走,630,米;再下山走,8,分到达磨坊。,下山每分走,90,米,14.,算一算,你发现了什么?再写两个类似的算式算一算,和同伴讨论一下其中的道理。,198,297,396,495,1998,3996,2997,4995,299,399,499,599,2999,3999,4999,5999,多,1,少,1,多,1,少,1,6,99,594,6,999,5994,(所写算式不唯一),义务教育北师大版三年级上册,练习五,第六单元,乘法,