北师大版四年级数学下册《歌手大赛-》练习课-学习资料.ppt

,单击此处编辑母版样式,第二级,第三级,第四级,第五级,第六级,第七级,第八级,*,*,单击此处编辑母版标题样式,北师大版 四年级下册 第一单元,小数的意义（三）,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,在计数器上拨出22.222，并说一说其中的“2”分别表示多少。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,2,2,2,2,2,个位,十位,百位,十分位,百分位,千分位,2个 ,2个0.1。,2个0.01。,2个0.001。,2个 ,2个 ,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,小数由整数部分、小数点、小数部分三部分组成。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,1,0.1,0.01,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,1.在计数器上画一画，再填一填。,0.4里面有（）个0.1,0.025里面有（）,个0.001。,14.24中，个位上的,“,4,”,表示（）个（）；,百分位上的,“,4,”,表示（）个（）。,4,25,4,1,4,0.01,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,2.看一看，填一填，说一说。,0.1,0.6,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,5元,5.00元,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,0.6,0.60,这叫小数的基本性质,0.6和0.60大小相等，但意义不一样,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,3.不改变数的大小，下面各数中的哪些,“,0,”,可以,去掉？先涂一涂，再与同伴交流。,0.03,0.30,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,4.把相等数的连起来。,3.90,42.040,34.0800,0.0600,3.20,3.200,0.06,3.09,42.04,34.8,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,5.在 里填上适当的分数或小数。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,6.尝试完成下面的计算。,0.110,0.1100,0.11000,0.0110,0.01100,0.011000,0.00110,0.001100,0.0011000,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,拓展练习,1、0.8和0.80都是一位小数，因为0.80末尾的“0”可以省去不写。这句话对吗？,4、两个数之和是605，其中一个数的末尾数字是0，如果把0去掉，就和另一个数相同，求这两个数各是多少？,2、0.1和0.10的大小和意义都相同，这句话对吗？,3、8.25的计数单位是（），它由（）个这样的计数单位组成。,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,通过今天的学习，你有什么收获？,Evaluation only.,Created with Aspose.Slides for.NET 3.5 Client Profile 5.2.0.0.,Copyright 2004-2011 Aspose Pty Ltd.,