![小数的意义(二)_第1页](http://file1.renrendoc.com/fileroot2/2020-1/10/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be3/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be31.gif)
![小数的意义(二)_第2页](http://file1.renrendoc.com/fileroot2/2020-1/10/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be3/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be32.gif)
![小数的意义(二)_第3页](http://file1.renrendoc.com/fileroot2/2020-1/10/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be3/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be33.gif)
![小数的意义(二)_第4页](http://file1.renrendoc.com/fileroot2/2020-1/10/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be3/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be34.gif)
![小数的意义(二)_第5页](http://file1.renrendoc.com/fileroot2/2020-1/10/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be3/680f66b5-b9a8-4b2e-9ddb-b1a4656b2be35.gif)
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、小数的意义和性质,1.小数的意义和读写法,第1课时 小数的意义,R四年级下册,知识回顾,(1)整数的计数单位有( )相邻的两个计数单位之间的进率是( )。 (2)1米=( )分米 1米=( )厘米 1米=( )毫米 (3) 表示把一个整体平均分成( )份,取了其中的( )份。 (4) 表示把一个整体平均分成( )份,取了其中的( )份。,个、十、百、千,10,1 10,3 100,10,100,1000,10,1,100,3,点击播放,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元
2、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,在生活中我们会经常遇到类似的问题,你能举一些例子吗?,妈妈买菜花了10元5角;坐公交车的时候刷了1元6角,在进行测量和计算时,往往不能正好得到整数的结果,这时也常常用小数来表示。,今天我们就来学习小数的意义。,自主探究,把1m平均分成十份。,你知道每份长多少米吗?,1米平均分成10份,每份长都是1dm,
3、也就是 米。,把1m平均分成十份。,1dm,m,0.1m,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,3分米、7分米怎么表示呢?,3,0.3,0.7,7,分母都是10。,状元成才路,状元成
4、才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,3,0.3,0.7,7,小数的小数点右边有1位。,如果把米尺平均分成100份呢?,每份是( )厘米,( )米,用小数表示是( )米。,1,0.01,状元成才路,状
5、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,0.04,0.08,填一填。,分母都是100。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状
6、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,0.04,0.08,填一填。,小数的小数点右边有2位。,15份怎么表示?,用分数表示为,用小数表示为0.15,0.006,0.013,分母都是1000。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元
7、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,0.006,0.013,小数的小数点右边有3位。,小数的计数单位是十分之一、百分之一、千分之一分别写作0.1、0.01、0.001 每相邻两个计数单位之间的进率是10。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状
8、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,0.6,0.7,0.32,(1)小数的计数单位有十分之一、( )、()等,分别写作( )、( )、( )。,(2)7分米是1米的(),写成小数是( )米。,(3)每相邻两个计数单位间的进率是( )。,百分之一,千分之一
9、,0.1,0.01,0.001,0.7,10,巩固深化,1.填空。,(4)0.8的计数单位是(),它有()个这样的计数单位;0.20的计数单位是(),它有( )个这样的计数单位。,十分之一,百分之一,20,(5)1里面有()个十分之一,0.1里面有()个百分之一,0.01里面有()个千分之一。,8,10,10,10,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,分数:( )米 ( )米 ( )米 小数:( )米 ( )米 ( )米,幼儿身高8分米,桌子高85厘米,小蚂蚁身长4毫米,2.,0.8,0.85,0.004,3.看图写出分数和小数。,(1)
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 古诗二首教学反思5篇
- 手房买卖合同按揭
- 买牛购销合同
- 盐的采集与利用产品的品牌溯源体系
- 农村房屋院子租赁合同
- 审计承诺书体育赛事篇
- 艺术创作空间出租过户协议
- 承租权转让合同范本
- 半年度仓储科工作总结5篇
- 医疗保健办公室租赁合同
- 接线端子国家标准
- 止血包扎PPT课件
- 各种pH标准缓冲溶液及不同温时的pH值
- 2022年医用空气消毒机消毒维护保养
- 小升初计算题精选
- 雨水模块传感器和口同时检测
- 上古卷轴5:天际全任务简要攻略
- 5 大体积混凝土施工工艺工法
- 广东省佛山市南海区2019-2020学年第二学期七年级期末考试数学试卷 解析版
- 混沌理论及其在岩土工程中的应用
- 广东省教师资格认定机构编码表(2006-09-07)
评论
0/150
提交评论