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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,11/7/2009,#,单击此处编辑母版标题样式,1,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,四年级上册数学课件第2单元 两三位数除以两位数第9课时 练习四苏教版,练习四,1,算一算,比一比。,9,2,3,2,4,2,9,0,9,0,3,2,3,9,6,2,1,练习四,1,算一算,比一比。,2,5,1,3,0,8,4,2,8,2,2,4,1,3,5,7,1,2,7,8,2,练习四,1,算一算,比一比。,2,6,3,4,0,6,5,2,8,2,2,6,4,4,0,5,2,2,0,0,4,练习四,2,先找出错在哪里,再改正。,练习四,3,用竖式计算并验算。,9231,43062,9,2,1,3,2,2,6,3,4,3,2,6,0,6,7,3,5,8,0,2,练习四,3,用竖式计算并验算。,22074,40583,2,2,4,7,0,2,4,1,7,2,8,4,0,3,8,5,4,3,3,7,3,2,练习四,4,平均每个少先队植树多少棵?,18423,8,(棵),答:平均每个少先队植树,8,棵。,练习四,5,算一算,比一比。,7,3,6,2,2,2,5,2,8,3,6,2,3,8,7,5,1,练习四,5,算一算,比一比。,3,1,6,4,2,6,7,2,6,3,3,2,6,4,2,7,2,3,2,0,6,练习四,5,算一算,比一比。,3,4,7,5,2,6,4,3,2,0,3,4,8,5,2,5,9,2,0,5,2,练习四,6,先找出错在哪里,再改正。,练习四,7,用竖式计算,并验算。,19828,63479,1,9,8,2,8,7,9,1,2,6,6,3,9,7,4,8,3,6,2,2,练习四,7,用竖式计算,并验算。,30037,54067,3,0,7,3,0,8,9,2,4,6,5,4,7,6,0,8,3,5,4,6,练习四,8,王叔叔家去年生产水果的情况如下表:,猕猴桃:,44828,16,(千克),水蜜桃:,91219,48,(千克),脐橙:,68953,13,(千克),练习四,9,每组中的两道题有什么不同?,2,5,2,3,6,8,5,2,6,0,2,5,4,3,6,7,3,2,8,1,8,练习四,9,每组中的两道题有什么不同?,1,4,8,1,0,7,2,1,6,1,1,0,8,1,8,6,0,1,8,0,4,练习四,10,用竖式计算。,21636,52487,2,1,6,3,6,6,1,2,0,6,5,2,7,8,4,6,2,5,2,2,练习四,10,用竖式计算。,14424,35852,1,4,4,2,4,6,4,1,0,4,3,5,2,5,8,6,1,3,4,2,6,练习四,11,先算一算,再说说每题是怎样试商的。,18221,18226,1,8,1,2,2,8,6,1,1,8,1,8,6,2,2,7,8,1,0,2,4,练习四,11,先算一算,再说说每题是怎样试商的。,28833,28836,2,8,3,3,8,8,6,2,2,4,2,8,6,3,8,7,5,2,3,2,4,6,练习四,11,先算一算,再说说每题是怎样试商的。,48261,48267,4,8,1,6,2,7,2,4,5,7,4,8,7,6,2,7,6,4,1,9,5,3,练习四,12,长青桥小学有一块面积是,490,平方米的长方形苗圃。苗圃的长是,35,米,宽是多少米?,答:宽是,14,米。,49035,14,(米),练习四,13,甲、乙两地之间的公路长,336,千米。,24,小时,(,1,)使用上面的交通工具,从甲地到乙地个需要多少小时?,6,小时,8,小时,4,小时,练习四,13,甲、乙两地之间的公路长,336,千米。,(,2,)你还能提出哪些用除法计算的问题?,练习四,14,口算下面各题。,32080,4,14020,63070,7,9,12060,2,906,72090,540,8,10050,2,8040,28070,2,4,练习四,15,先说说商是几位数,再计算。,2,9,7,3,6,8,9,2,6,0,9,3,3,1,6,7,1,9,2,6,2,2,6,0,练习四,15,先说说商是几位数,再计算。,2,0,2,5,4,3,5,1,6,4,8,9,6,2,9,3,8,7,1,1,4,1,0,1,8,9,4,5,练习四,16,先说说商的最高位可能是几,再计算。,61218,34,64832,84523,208,3617,55218,60823,84528,3012,2610,305,练习四,17,37647,62123,8,27,73418,34068,4014,5,练习四,18,四年级同学准备制作,160,个灯笼庆祝国庆。已经做了,76,个,剩下的分给,28,个同学去做,平均每人要做多少个?,答:平均每人要做,3,个。,(,160,76,),28,3,(个),练习四,19,王大伯家养了,185,只公鸡和,229,只母鸡,还养了,46,只鸭。鸡的只数是鸭的几倍?,(,185,229,),46,9,答:鸡的只数是鸭的,9,倍。,练习四,20,192,(,42,),24,(棵),答:平均每行有,24,棵。,练习四,思考题:,小春在计算除法时,把除数,72,误写成了,27,,结果得到商,26,还余,18,。你能算出正确的结果吗?,2726,18,720,72072,10,谢谢观赏,
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