复习以内加减法口算_.pdf

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1、1/12 复习 100 以内加减法口算(1)学习内容：教材第 9293 页的 18 题。学习目标：1进一步理解、巩固本单元所学的知识，加深知识间的联系，综合运用所学知识解决简单的实际问题。2在经历知识整理复习的过程中，体验整理知识的方法，初步形成归纳、整理知识的能力，逐步养成回顾和反思的好习惯。3在数学思维的训练中感受学习数学的快乐，增强学习数学的自信心和成功感。学具准备：课件、口算卡片学习过程：一、整理师：小朋友，老师带来了一颗智慧树，上面结满了智慧果。你想得到它吗？只要说出算式的得数就表示你得到智慧果成为一个智慧小朋友。学生口算师：智慧果上的这些算式都是我们已经学过的100 以内加减法，给

2、它们分分类，想想可以分几类，怎么分？（学生分组活动）师：哪组愿意拿给大家看？师：他们组分成了两大类，说说是怎样想的？生：我们把加法分为一类，减法分为一类。生：我们分成：两位数加减整十数、两位数加减一位数。师：你们真会观察，一样的举手。师：这一组分得更细了，把加法又分成了，两位数加整十数，两位数加一位数，把减法又分成了两位数减整十数、两位数减一位数。真会观察，一样的举手。师：还有分得更细的吗？生：我们把加法分成了，两位数加整十数，两位数加一位数（进位、不进位），把减法分成了两位数减整十数、两位数减一位数（退位、不退位）2/12 师：我们刚刚分的每一类，它们的计算方法是怎样的呢？先来看两位数加减整

3、十数这两类，我们可以任意的选两题74+20、85-50 说说怎样算？师：那你觉得算两位数加减整十数先怎样算？又怎样算？生：算两位数加减整十数先把十位上的数相加或相减、再加减个位上的数。师：你很善于总结。说得真棒！师:两位数加一位数的计算方法是怎样的呢？我们也可以举个例子说说？35+4=，45+8怎么算？生：都是先把个位上的数加起来、再加十位。师；如果个位加起来不满十，十位不变师：如果个位加起来满十，个位几加几得十几，再和十位上的数相加。师：那两位数减一位数的计算方法又是怎样的呢？谁能作小老师上来说说，生：76-5，只要6-5=1，70+1=71，85-7，5-7 不够减，就想15-7=8，70

4、+8=78，师：把方法总结一下？谁能说？生：两位数减一位数都是个位上的数相减，如果个位够减，个位几减几得几，十位不变，如果不够减，就想十几减几，再和十位上的数相加。二、揭题：师：刚才我们用分一分，说一说的方法复习了（100 以内加减法口算），板书课题，总结了口算方法你能看算式写得数吗？完成第1 题。请学生说一说，你是怎么算的，这两道式子的算法有什么不同？三、计算练习：1、视算：(复习第 3 题)师：把书打开到第92 页，学生自己完成。师：全对的举手。很棒，老师真为你们高兴。师：说说 35-9 怎样算的？2、改错：（课件）师:判断对还是错，手势表示，准备321 表示，你是怎么想的？正确的得数文档

5、编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V

6、9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R

7、1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8

8、文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T

9、6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N

10、9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5

11、I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I83/12 应多少？小结：平时我们在做口算时，可以用再算一遍，或倒着往回算，也可用估算等，选择合适的方法进行检查。3、法官：（第 4 题）师：小猫和小狗正在烦恼，他们要分出比50 大的算式，你能帮帮他们吗？学生在书第 92 页完成第 4 题。反馈：刚才这位小朋友做的最快

12、了，说说你是怎样想的？依次校对。发现窍门？小结：看来，仔细观察，发现窍门，能使计算简便，快速。4、小小观察家（第 5 题）师：你们帮小猫小狗解决了问题，为了谢谢你们他们带来了一些礼物，出示，要想拿到这些礼物，你要完成这些题目才行。可以吗？依次校对。发现解题规律，让学生进行观察、比较，以明确加、减法算式各部分之间的关系。5、小游戏（第 2 题）师：同位喊123 同时出数字卡片抢说加减算式及得数，获胜着两张卡片归自己。最后谁获得卡片多谁是胜者，得智慧果一个。四、解决问题1、小小读书家（第6 题）小朋友这么爱学习，平时肯定读了很多书。这里有一本儿童画报，有46 页，兰兰还有 8 页没有看，已经看了多

13、少页？学生自己解决，全班校对。2、小小商店（第 7、8 题）商店里的李叔叔收了一批鸡蛋，前3 天卖了 64 个，还剩 6 个。他一共收了多少个？（启发学生体会：这些鸡蛋的总个数与所卖的天数没有关系）张阿姨准备带阳阳去买衣服，付出50 元，找回 2 元。你知道她买了哪件？学生要知道买的是哪件上衣，就要先算出她买上衣花了多少钱。再观察图上数学信息，与三件衣服的价格比较。五、总结文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1

14、ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档

15、编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V

16、9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R

17、1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8

18、文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T

19、6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N

20、9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I84/12 师：刚才小朋友说得都是知识方面的收获，还能不能从学习方法课堂表现等方面来谈谈收获？师：看来大家收获都很大！老师真为你们高兴，下课。同学们休息。100 以内笔算加、减法复习（2）学习内容：苏教版一年级下册93、94 页第 9 题-第 13 题学习目标：1.通过复习，巩固 100 以内笔算加、减法，培养学生思维灵活性。2.通过学习提高学生的合作意识和学习兴趣，是学生想学、乐学、会学。学习重难点：提高 100以内笔算加、减法的计算正确率。学习准备：课件学习过程：一、复习。1口算卡

21、片20+8 75-7 7+40 42+5 56+30 80+10 52-50 76+6 25-20 62-8 31+40 81-3 2揭题：小朋友们口算速度真快。今天,我们继续复习。二、自主学习，巩固练习1算一算，比一比。（复习第9 题）（1）指名板演，其他同学独立完成。（2）汇报交流，说说结果是多少？（3）分小组讨论，这6 道题有什么不同和相同的地方？提示：先上下两题进行比较，然后左右三题进行比较。（在写竖式时，要注意观察进位和退位，如果有进位退位的时候，要记得加上标记，方便计算。）2用竖式计算。（复习第10 题）文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5

22、I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C

23、6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R

24、9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1

25、W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A

26、4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X1

27、0R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6

28、T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I85/12（1）同桌两人合作，左边同学做第一行，右边同学做第二行。（2）汇报交流，说说结果是多少？（3）提问：写竖式时要注意什么？计算时从哪一位算起？遇到个位满十或不够减时怎么办？3夺红旗。（复习第11 题）小朋友，下面我们进行夺红旗的小游戏。（1）游戏规则：同桌之间，坐左边的从左边算起，坐右边的从右边算起，看谁先夺得红旗。（2）同桌比赛，做

29、完之后，同桌交换，再比赛一次。（3）给两次都获胜的同学发奖品。（提醒：退位减，十位是0，不用写，只写个位）4复习第 12 题（1）从图上你知道了什么？（2）问题一：求什么？怎么求？（说数量关系）怎么列式？（3）问题二：求什么？怎么求？（说数量关系）怎么列式？（4）你还能提出什么问题？（注意观察问题是求什么，再找出对应的条件。）5.复习第 13 题（1）你知道这题是什么意思吗？（2）学生独立完成，教师巡视。（3）开火车的形式汇报答案，激发学生的兴趣。（4）这些算式有什么特点？6.思考题小朋友们，下面我们一起来做算式谜。介绍算式谜：就是根据算式中给出的数字，填写出未知数。第 1 题:（1）帮学生理

30、解题意。想一想：这样的题，应该先看哪一位？（2）自主探究，同桌交流，教师巡视指导。文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T

31、6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N

32、9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5

33、I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C

34、6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R

35、9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1

36、W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I86/12（3）派代表上台讲解。反馈，先看个位：（）+6=4，说明什么？（个位满十进位），想：6+（）=14 再看十位：个位满十进1，所以，（）+5+1=9 第 2 题:（1）自主探究

37、，同桌交流，教师巡视指导。（2）派代表上台讲解。反馈，先看个位：（）-2=5，想：5+2=7 再看十位：6-（）=1，想：6-5=1 第 3 题:（1）自主探究，同桌交流，教师巡视指导。（2）派代表上台讲解。反馈，先看个位：（）-6=5，说明个位不够减，向十位借1，想:5+6=()再看十位：因为个位向十位借1，所以 7-()=4 小朋友们，解算式谜时要注意什么？小结：首先要先审题，整体思考，寻找突破口，突破口可能一个可能多个，把能算的先算出来。还要适当应用估算。三、总结全课。这节课你学得开心吗？有什么收获？文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编

38、码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9

39、 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1

40、 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文

41、档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6

42、V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9

43、R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I

44、8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I87/12 复习 100以内的数、平面图形、元、角、分的认识学习内容：教材第 95、96 页 16 题。学习目标：1.通过复习使学生进一步加深对100 以内的数的组成、数位、数的大小比较等知识的理解。2.通过复习进一步加深对平面图形和元、角、分知识的认识。3.通过有针对性的练习，激发学生学习数学的兴趣、发展学生的数感。学习重点：进一步理解100 以内的

45、数的组成、数位、数的大小比较、平面图形及元、角、分的认识。学习难点：增强学生用数表达和交流的意识，进一步发展数感。学习准备：多媒体课件学习过程：一、情境导入从今天开始，我们进入到总复习阶段，首先我们复习一下100 以内的数和常见的平面图形以及元、角、分的知识。板书：复习 100 以内的数、平面图形、元角分的认识一、复习 100 以内的数【设计意图：通过数数、游戏等活动帮助学生进一步理解100以内的数的组成、数位、数的大小比较。】1.复习计数单位十、百、数数、写数（1）一个一个从 37 数到 52，再从 100 数到 71（2）十个十个数到一百、五个五个数到100、数 100以内的单、双数（3）

46、完成期末复习 1 学生独立完成在书上。文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6

47、T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK

48、6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6

49、X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8

50、S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码:CK6A4C6T6V9 HT6X10R9N9R1 ZI8S6T1W5I8文档编码: