口算两位数加两位数
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两位数加两位数的口算方法口算是数学学习中不可或缺的一部分。
在实际生活中,我们经常需要进行口算,如购物、找零、算账等。
本文将介绍关于两位数加两位数的口算方法,包括常用的竖式口算方法和变形口算方法,以及在口算中注意事项和练习建议。
1. 竖式口算方法竖式口算方法是我们最常见的口算方法之一。
这种方法将两个二位数竖排,逐位相加,从低位开始计算,将进位的数值加到高位。
计算34+58:34+ 58-------92从个位开始计算,4+8=12,写下2,将十位的1进位。
3+5+1=9,写下9,计算完毕。
这种方法简单易懂,适用于较小的数字计算。
2. 变形口算方法变形口算方法是指通过变换数字,使口算变得更容易。
计算37+48可以转换为37+50-2,这样算起来更加简便。
我们也可以将两个数字拆分为更小的数相加,例如48可以拆分为40+8,计算37+40和37+8,然后将两个结果相加得到最终答案。
3. 数字调换法数字调换法是指调换数字的顺序,使计算更方便。
计算61+48可以转换为48+61,这样就可以直接将个位相加,然后将十位相加,得到109。
4. 进位前添0法进位前添0法是指在数字前面添上0,来帮助我们计算进位。
计算23+58可以转换为023+058,在竖式口算的时候,进位时就容易计算了。
5. 整十整百相加法整十整百相加法是指将两个数字分别拆分为十位数和个位数,然后将十位数相加,个位数相加。
计算67+23可以分别拆分为60+20和7+3,然后将60+20=80和7+3=10,得到最终答案90。
6. 借位减法变加法法借位减法变加法法是指将减法转换为加法,再通过借位来得到最终的答案。
计算67+28可以转换为67+(10-2)+28,然后将10-2=8,得到最终答案95。
7. 逆序加法法逆序加法法是指将两个数字的顺序调换,然后从末位开始相加。
计算67+23可以转换为76+32,然后从个位开始相加,得到最终答案99。
8. 进位加1法进位加1法是指在数字相加时,如果有进位,则将进位的位置加上1。
---------------------------------------------------------------最新资料推荐------------------------------------------------------ 两位数加两位数(口算)教学设计两位数加两位数(口算)教学目标:能口算和在 100 以内的两位数加两位数,能运用所学知识解决一些相应的实际问题。
教学重点:掌握两位数加两位数的口算方法。
难点:正确地口算出进位的两位数加两位数的结果。
教学过程:课前谈话:今天,老师第一次来和同学们一起学习,你们欢迎吗?(生:欢迎!)听说我们班的同学特别聪明,上课最积极回答问题,特别是上数学课。
今天老师就和大家一起上一节数学课,你们能不能把你最好的一面展现给大家看。
(生:能。
)老师对同学们也很有信心。
那下面我们就开始上课。
一、复习师:同学们,你们喜欢猜谜语吗?生:喜欢。
1 / 9(好,请看大屏幕。
)(课件出示)谜语翅膀一展亮晶晶,整天飞舞花丛中,手足不闲爱劳动,酿造甜糖好过冬。
师:有谁知道是什么呀?生:小蜜蜂。
师:嗯,同学们真聪明,一猜就对了。
今天小蜜蜂要邀请我们二(8)的同学们到蜜蜂王国里去做客,你们想去吗?(生:想。
)但是蜜蜂有个条件,你们必须闯关成功后才能去哦。
你们有信心吗?(生:有。
)过关考验 1、说出下面数的组成:(抢答:谁想到答案就站起来说) 68=()+8 37=()+7 42=()+2 29=20+() 76=70+()35=30+() 2、口算出下面各题的得数。
(谁举手得快谁就来说) 6+8= 52+7=---------------------------------------------------------------最新资料推荐------------------------------------------------------ 36+9= 32+40= 30+90= 43+20= 师:看来我们班的同学口算能力真棒!同学们,祝贺你们过关了!我们一起去蜜蜂王国吧。
20 道三年级两位数加减两位数口算题一、加法口算题1. 23 + 45 = 68-解析:先算个位3+5=8,再算十位2+4=6,所以结果是68。
2. 34 + 56 = 90-解析:个位4+6=10,向十位进1,十位3+5+1=9,结果为90。
3. 45 + 32 = 77-解析:个位5+2=7,十位4+3=7,结果是77。
4. 56 + 23 = 79-解析:个位6+3=9,十位5+2=7,结果为79。
5. 67 + 12 = 79-解析:个位7+2=9,十位6+1=7,结果是79。
二、减法口算题1. 56 - 34 = 22-解析:个位6-4=2,十位5-3=2,结果是22。
2. 78 - 45 = 33-解析:个位8-5=3,十位7-4=3,结果是33。
3. 89 - 56 = 33-解析:个位9-6=3,十位8-5=3,结果是33。
4. 90 - 67 = 23-解析:个位0-7 不够减,向十位借1,10-7=3,十位8-6=2,结果是23。
5. 76 - 43 = 33-解析:个位6-3=3,十位7-4=3,结果是33。
三、混合口算题1. 45 + 23 - 34 = 34-解析:先算加法45+23=68,再算减法68-34=34。
2. 56 + 34 - 45 = 45-解析:先算加法56+34=90,再算减法90-45=45。
3. 67 + 23 - 34 = 56-解析:先算加法67+23=90,再算减法90-34=56。
4. 78 + 12 - 45 = 45-解析:先算加法78+12=90,再算减法90-45=45。
5. 89 + 11 - 56 = 44-解析:先算加法89+11=100,再算减法100-56=44。
小学数学《口算两位数加两位数》教学设计教学目标1、使学生在具体的情境中,理解掌握两位数加两位数的口算方法,并能正确地进行计算。
2、使学生经历探索两位数加两位数口算方法的过程,渗透“转化”的数学思想,加深对口算算理的理解,发展数感。
3、使学生感受数学与日常生活的紧密联系,在探索的过程中获得成功的体验。
教学重点:经历探索两位数加两位数口算方法的过程,掌握两位数加两位数的口算方法。
教学难点;正确口算出两位数加两位数的进位加法。
教法:自主探究教学准备多媒体课件教学过程一、情境导入,引入新知1.复习旧知,引入新知35+30= 64+5= 48+30=79+4= 53+40= 66+8=仔细观察这两组题目,说一说你们是怎样计算的。
师小结:两位数加整十数,可以先把十位上的数相加,再加个位上的数。
两位数加一位数时,可以先把个位上的数相加,再加整十数。
你们喜欢卡通人物吗?今天老师带来一个卡通人物。
课件出示:“海宝”,介绍它的名称及上海世博会的资料。
二、探究新知1、两位数加两位数不进位口算方法。
(1)观察教材第9页的主题图,从图中你获得了哪些信息?学生汇报。
(一至五年级参加“世博会”的各班人数)(2)出示问题:一年级一共要买多少张车票?(3)提问:如何解决这个问题?求一共多少张车票就是求一年级一共有多少人,一年级一班35人,二班34人,用加法计算,列式:35+34。
出示学习指南:请同学们结合以前的知识运用自己喜欢的口算方法来算这道题,然后小组交流自己口算方法。
汇报口算方法方法一:34可以看成30+4,先算35+30=65,再算65+4=69. 方法二:34看成30+4,35看成30+5,先算30+30=60,4+5=9,再算60+9=69。
方法三:将35分成30和5,先算30+34=64,再算64+5=69. 教师课件演示2、两位数加两位数的进位口算方法。
(1)出示问题:二年级一共要买多少张车票?(2)列式计算:39+44小组讨论怎样计算?并说一说自己的口算方法。
分秒练习范围:两位数加两位数(进位加) 题数:90成绩:27 + 38 = 16 + 59 = 82 + 18 = 39 + 23 = 18 + 14 = 69 + 26 = 33 + 28 = 28 + 18 = 14 + 28 = 35 + 55 = 26 + 16 = 43 + 38 = 16 + 15 = 39 + 56 = 19 + 46 = 14 + 36 = 26 + 27 = 29 + 52 = 63 + 19 = 28 + 22 = 14 + 19 = 38 + 17 = 25 + 27 = 22 + 19 = 49 + 41 = 36 + 19 = 44 + 38 = 21 + 69 = 47 + 37 = 12 + 28 = 27 + 34 = 43 + 57 = 11 + 89 = 48 + 48 = 19 + 36 = 67 + 29 = 19 + 26 = 62 + 18 = 16 + 29 = 36 + 64 = 18 + 67 = 18 + 63 = 78 + 18 =28 + 72 =15 + 56 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:37 + 13 = 16 + 74 = 48 + 26 = 15 + 35 = 58 + 39 = 29 + 51 = 27 + 66 = 39 + 44 = 35 + 29 = 66 + 17 = 18 + 48 = 29 + 23 = 60 + 40 = 29 + 13 = 45 + 15 = 26 + 57 = 15 + 28 = 15 + 18 = 28 + 19 = 17 + 47 = 15 + 57 = 59 + 29 = 18 + 12 = 18 + 36 = 18 + 43 = 27 + 27 = 16 + 35 = 78 + 15 = 15 + 68 = 15 + 38 = 37 + 45 = 16 + 44 = 19 + 45 = 49 + 43 = 38 + 57 = 78 + 22 = 36 + 49 = 54 + 18 = 16 + 79 = 22 + 28 = 66 + 15 = 48 + 36 = 47 + 48 =38 + 53 =28 + 15 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:47 + 49 = 17 + 73 = 65 + 27 = 44 + 38 = 35 + 56 = 27 + 19 = 12 + 38 = 18 + 14 = 32 + 59 = 14 + 56 = 38 + 37 = 15 + 35 = 39 + 52 = 32 + 29 = 25 + 27 = 12 + 28 = 76 + 18 = 38 + 25 = 19 + 24 = 23 + 28 = 16 + 36 = 33 + 38 = 69 + 31 = 43 + 37 = 28 + 18 = 22 + 39 = 18 + 36 = 17 + 45 = 45 + 38 = 14 + 48 = 49 + 41 = 24 + 66 = 19 + 66 = 49 + 49 = 14 + 69 = 31 + 19 = 14 + 19 = 18 + 48 = 19 + 26 = 17 + 59 = 66 + 18 = 69 + 24 = 26 + 57 =26 + 64 =57 + 29 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:18 + 26 = 37 + 33 = 46 + 38 = 43 + 49 = 28 + 53 = 15 + 17 = 63 + 17 = 53 + 47 = 28 + 19 = 27 + 66 = 75 + 15 = 18 + 63 = 16 + 66 = 37 + 13 = 59 + 36 = 48 + 52 = 16 + 35 = 59 + 34 = 19 + 62 = 62 + 18 = 39 + 54 = 72 + 19 = 38 + 39 = 18 + 18 = 26 + 19 = 29 + 39 = 19 + 55 = 24 + 58 = 28 + 59 = 47 + 15 = 25 + 17 = 26 + 16 = 29 + 36 = 48 + 19 = 18 + 43 = 15 + 68 = 29 + 56 = 37 + 25 = 47 + 37 = 18 + 25 = 24 + 38 = 57 + 27 = 21 + 59 =29 + 58 =46 + 29 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:36 + 37 = 29 + 27 = 17 + 54 = 37 + 13 = 15 + 35 = 44 + 39 = 54 + 18 = 11 + 39 = 19 + 34 = 46 + 29 = 46 + 28 = 22 + 39 = 66 + 15 = 19 + 46 = 25 + 56 = 17 + 59 = 26 + 54 = 38 + 57 = 57 + 16 = 37 + 57 = 67 + 29 = 68 + 17 = 64 + 16 = 53 + 18 = 48 + 48 = 15 + 17 = 15 + 37 = 18 + 14 = 49 + 21 = 34 + 17 = 17 + 65 = 18 + 67 = 58 + 17 = 48 + 52 = 29 + 25 = 28 + 49 = 49 + 48 = 24 + 36 = 18 + 43 = 57 + 13 = 38 + 39 = 47 + 19 = 42 + 58 =21 + 49 =27 + 33 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:59 + 17 = 25 + 37 = 18 + 63 = 37 + 45 = 47 + 37 = 59 + 34 = 49 + 41 = 46 + 34 = 29 + 52 = 51 + 19 = 37 + 47 = 82 + 18 = 36 + 19 = 35 + 39 = 45 + 38 = 39 + 54 = 19 + 26 = 29 + 54 = 28 + 64 = 65 + 29 = 29 + 58 = 49 + 49 = 65 + 16 = 69 + 24 = 18 + 18 = 65 + 27 = 34 + 48 = 16 + 35 = 18 + 48 = 47 + 35 = 25 + 27 = 56 + 34 = 16 + 28 = 44 + 56 = 49 + 39 = 74 + 26 = 16 + 14 = 66 + 27 = 12 + 79 = 17 + 26 = 78 + 13 = 28 + 18 = 16 + 44 =15 + 77 =38 + 25 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:14 + 47 = 28 + 43 = 25 + 28 = 59 + 17 = 14 + 66 = 15 + 77 = 74 + 26 = 25 + 55 = 48 + 46 = 69 + 24 = 36 + 19 = 37 + 55 = 24 + 58 = 25 + 27 = 43 + 38 = 27 + 34 = 28 + 18 = 37 + 45 = 68 + 15 = 39 + 52 = 44 + 26 = 57 + 28 = 18 + 18 = 15 + 35 = 18 + 48 = 22 + 28 = 39 + 33 = 49 + 27 = 45 + 28 = 17 + 73 = 19 + 31 = 59 + 36 = 28 + 19 = 35 + 65 = 59 + 34 = 77 + 19 = 29 + 14 = 17 + 48 = 79 + 14 = 29 + 58 = 28 + 57 = 15 + 68 = 15 + 29 =47 + 18 =16 + 35 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:56 + 26 = 47 + 43 = 26 + 39 = 22 + 19 = 15 + 49 = 27 + 54 = 19 + 75 = 48 + 16 = 11 + 69 = 18 + 13 = 60 + 40 = 17 + 27 = 27 + 63 = 47 + 37 = 78 + 13 = 27 + 48 = 51 + 19 = 38 + 57 = 65 + 27 = 19 + 73 = 37 + 13 = 17 + 24 = 55 + 18 = 68 + 23 = 29 + 23 = 48 + 36 = 67 + 29 = 28 + 66 = 43 + 49 = 17 + 65 = 24 + 36 = 23 + 49 = 11 + 29 = 48 + 48 = 29 + 52 = 34 + 47 = 35 + 36 = 62 + 18 = 34 + 46 = 13 + 19 = 26 + 57 = 26 + 55 = 44 + 38 =29 + 18 =79 + 11 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:62 + 18 = 19 + 62 = 15 + 45 = 19 + 22 = 68 + 12 = 39 + 54 = 54 + 18 = 47 + 37 = 29 + 18 = 46 + 48 = 65 + 27 = 34 + 29 = 33 + 38 = 37 + 38 = 33 + 57 = 48 + 19 = 28 + 15 = 15 + 48 = 66 + 15 = 44 + 47 = 63 + 37 = 27 + 57 = 19 + 24 = 19 + 32 = 29 + 14 = 12 + 28 = 14 + 19 = 33 + 28 = 67 + 29 = 26 + 28 = 15 + 35 = 28 + 47 = 48 + 36 = 59 + 17 = 29 + 58 = 26 + 46 = 24 + 39 = 26 + 15 = 60 + 40 = 28 + 59 = 51 + 19 = 48 + 37 = 37 + 48 =18 + 14 =27 + 13 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:57 + 19 = 43 + 29 = 24 + 69 = 62 + 29 = 35 + 28 = 19 + 42 = 28 + 18 = 29 + 52 = 36 + 34 = 38 + 25 = 78 + 14 = 18 + 72 = 39 + 53 = 74 + 26 = 18 + 18 = 78 + 22 = 59 + 41 = 28 + 64 = 56 + 27 = 68 + 15 = 19 + 26 = 58 + 17 = 49 + 51 = 17 + 73 = 18 + 74 = 28 + 19 = 49 + 29 = 19 + 46 = 13 + 19 = 57 + 13 = 17 + 65 = 43 + 49 = 22 + 39 = 47 + 15 = 65 + 16 = 43 + 27 = 32 + 29 = 15 + 68 = 47 + 19 = 15 + 17 = 28 + 57 = 46 + 47 = 37 + 13 =16 + 35 =11 + 39 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:18 + 18 = 49 + 38 = 23 + 67 = 14 + 79 = 19 + 69 = 18 + 48 = 58 + 17 = 48 + 36 = 78 + 14 = 39 + 52 = 22 + 19 = 29 + 21 = 21 + 29 = 78 + 22 = 56 + 44 = 36 + 36 = 34 + 16 = 25 + 55 = 26 + 46 = 18 + 53 = 59 + 34 = 28 + 19 = 18 + 37 = 24 + 36 = 32 + 49 = 60 + 40 = 15 + 38 = 67 + 19 = 29 + 23 = 48 + 19 = 12 + 79 = 19 + 46 = 68 + 15 = 18 + 14 = 16 + 64 = 39 + 35 = 16 + 78 = 69 + 29 = 45 + 15 = 38 + 39 = 25 + 49 = 55 + 29 = 18 + 76 =19 + 24 =25 + 57 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:27 + 66 = 66 + 15 = 18 + 74 = 27 + 43 = 18 + 67 = 39 + 21 = 29 + 64 = 38 + 57 = 28 + 53 = 17 + 73 = 16 + 35 = 37 + 63 = 82 + 18 = 18 + 43 = 12 + 58 = 48 + 48 = 26 + 19 = 14 + 28 = 45 + 49 = 18 + 63 = 48 + 52 = 37 + 43 = 37 + 27 = 47 + 27 = 39 + 43 = 15 + 17 = 43 + 47 = 53 + 37 = 12 + 28 = 18 + 16 = 45 + 38 = 28 + 18 = 38 + 13 = 69 + 24 = 44 + 38 = 28 + 12 = 36 + 17 = 26 + 57 = 28 + 15 = 38 + 25 = 29 + 69 = 19 + 62 = 34 + 46 =17 + 65 =22 + 39 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:15 + 77 = 34 + 39 = 78 + 14 = 74 + 26 = 35 + 39 = 18 + 18 = 14 + 28 = 23 + 39 = 14 + 38 = 19 + 48 = 28 + 29 = 37 + 13 = 45 + 15 = 65 + 27 = 24 + 49 = 39 + 55 = 28 + 15 = 27 + 26 = 25 + 55 = 65 + 16 = 68 + 15 = 38 + 25 = 19 + 26 = 45 + 38 = 24 + 46 = 46 + 26 = 28 + 19 = 33 + 38 = 43 + 49 = 24 + 58 = 38 + 46 = 22 + 28 = 78 + 17 = 29 + 58 = 36 + 57 = 45 + 45 = 18 + 33 = 14 + 17 = 39 + 58 = 39 + 54 = 19 + 24 = 25 + 27 = 26 + 57 =18 + 58 =46 + 38 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:32 + 29 = 22 + 39 = 34 + 47 = 34 + 27 = 44 + 18 = 16 + 26 = 28 + 12 = 48 + 52 = 26 + 27 = 34 + 36 = 19 + 46 = 33 + 28 = 18 + 14 = 35 + 59 = 18 + 43 = 14 + 56 = 19 + 49 = 42 + 58 = 12 + 28 = 69 + 26 = 69 + 28 = 27 + 66 = 48 + 22 = 18 + 48 = 51 + 19 = 69 + 24 = 16 + 79 = 18 + 55 = 48 + 17 = 33 + 29 = 78 + 12 = 15 + 38 = 48 + 16 = 17 + 65 = 14 + 86 = 49 + 45 = 48 + 19 = 15 + 29 = 55 + 29 = 69 + 17 = 24 + 57 = 13 + 19 = 27 + 19 =36 + 45 =28 + 18 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:45 + 38 = 39 + 41 = 38 + 57 = 23 + 48 = 78 + 13 = 17 + 76 = 46 + 17 = 15 + 38 = 18 + 35 = 22 + 39 = 65 + 16 = 46 + 38 = 66 + 15 = 35 + 38 = 33 + 38 = 29 + 16 = 49 + 28 = 13 + 19 = 34 + 47 = 44 + 38 = 63 + 29 = 57 + 13 = 15 + 77 = 36 + 19 = 29 + 23 = 28 + 49 = 58 + 23 = 23 + 28 = 48 + 52 = 15 + 68 = 44 + 56 = 12 + 28 = 19 + 44 = 59 + 17 = 31 + 39 = 19 + 75 = 14 + 26 = 39 + 53 = 27 + 66 = 38 + 54 = 18 + 18 = 24 + 58 = 28 + 15 =77 + 15 =21 + 49 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:15 + 17 = 39 + 54 = 24 + 36 = 60 + 40 = 12 + 58 = 48 + 28 = 38 + 34 = 42 + 58 = 18 + 48 = 28 + 18 = 23 + 18 = 90 + 10 = 48 + 36 = 29 + 15 = 47 + 38 = 33 + 28 = 34 + 49 = 29 + 31 = 82 + 18 = 18 + 63 = 36 + 38 = 25 + 17 = 49 + 17 = 17 + 75 = 55 + 29 = 12 + 48 = 22 + 28 = 35 + 55 = 59 + 35 = 16 + 35 = 39 + 52 = 16 + 19 = 77 + 19 = 12 + 79 = 27 + 46 = 26 + 27 = 79 + 13 = 37 + 17 = 25 + 16 = 17 + 68 = 18 + 57 = 58 + 16 = 59 + 41 =37 + 45 =28 + 64 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:18 + 63 = 74 + 26 = 65 + 27 = 25 + 39 = 39 + 52 = 29 + 56 = 37 + 33 = 39 + 61 = 47 + 37 = 78 + 13 = 49 + 49 = 26 + 55 = 47 + 44 = 19 + 26 = 28 + 64 = 47 + 19 = 12 + 28 = 36 + 18 = 15 + 77 = 26 + 27 = 28 + 15 = 26 + 26 = 22 + 39 = 29 + 38 = 37 + 47 = 62 + 38 = 45 + 27 = 57 + 35 = 38 + 39 = 18 + 36 = 57 + 13 = 18 + 67 = 39 + 54 = 68 + 25 = 28 + 18 = 48 + 19 = 26 + 65 = 54 + 18 = 49 + 27 = 17 + 59 = 12 + 79 = 14 + 76 = 69 + 27 =69 + 24 =25 + 75 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:39 + 55 = 78 + 15 = 25 + 57 = 15 + 38 = 27 + 19 = 46 + 25 = 79 + 11 = 44 + 38 = 14 + 17 = 66 + 15 = 82 + 18 = 26 + 57 = 49 + 29 = 78 + 22 = 34 + 27 = 14 + 66 = 39 + 36 = 58 + 23 = 59 + 25 = 22 + 19 = 41 + 49 = 27 + 49 = 44 + 47 = 45 + 16 = 49 + 31 = 38 + 24 = 77 + 13 = 27 + 23 = 14 + 28 = 47 + 13 = 29 + 23 = 49 + 15 = 78 + 14 = 25 + 55 = 47 + 14 = 38 + 25 = 64 + 17 = 23 + 38 = 42 + 58 = 60 + 40 = 37 + 45 = 35 + 55 = 27 + 36 =67 + 29 =34 + 26 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:12 + 58 = 32 + 19 = 59 + 34 = 18 + 43 = 49 + 49 = 54 + 18 = 57 + 43 = 26 + 57 = 68 + 14 = 28 + 18 = 82 + 18 = 26 + 16 = 25 + 68 = 78 + 22 = 39 + 31 = 27 + 15 = 38 + 57 = 14 + 29 = 15 + 29 = 15 + 17 = 25 + 35 = 48 + 36 = 59 + 17 = 28 + 39 = 47 + 43 = 69 + 21 = 46 + 54 = 49 + 41 = 49 + 29 = 13 + 79 = 68 + 15 = 57 + 29 = 27 + 34 = 58 + 28 = 32 + 18 = 49 + 17 = 16 + 35 = 18 + 63 = 25 + 56 = 38 + 22 = 64 + 18 = 39 + 49 = 69 + 24 =28 + 19 =49 + 16 =分秒练习范围:两位数加两位数(进位加) 题数:90成绩:34 + 37 = 39 + 11 = 37 + 63 = 16 + 14 = 19 + 27 = 25 + 55 = 45 + 15 = 39 + 56 = 25 + 26 = 46 + 44 = 34 + 29 = 39 + 54 = 45 + 38 = 18 + 75 = 26 + 46 = 17 + 73 = 78 + 14 = 12 + 79 = 36 + 19 = 60 + 40 = 15 + 68 = 58 + 19 = 34 + 47 = 27 + 66 = 33 + 28 = 28 + 15 = 43 + 38 = 37 + 13 = 58 + 17 = 19 + 24 = 17 + 59 = 24 + 36 = 35 + 16 = 14 + 56 = 18 + 67 = 13 + 29 = 29 + 52 = 45 + 18 = 47 + 19 = 37 + 36 = 17 + 39 = 18 + 48 = 28 + 64 =65 + 27 =24 + 19 =。
两位数加两位数进位加法口算题50道1. 27+5 [填空题] *_________________________________(答案:32)2. 58+8 [填空题] *_________________________________(答案:66)3. 25-15 [填空题] *_________________________________(答案:10)4. 57+12 [填空题] *_________________________________(答案:69)5. 66-35 [填空题] *_________________________________(答案:31)6. 63+7 [填空题] *_________________________________(答案:70)7. 54-14 [填空题] *_________________________________(答案:40)8. 35+15 [填空题] *_________________________________(答案:50)9. 9+36 [填空题] *_________________________________(答案:45)10. 55-21 [填空题] *_________________________________(答案:34)11. 35-22 [填空题] *_________________________________(答案:13) 12. 64+9 [填空题] *_________________________________(答案:73) 13. 47-25 [填空题] *_________________________________(答案:22) 14. 25+7 [填空题] *_________________________________(答案:32) 15. 22+10 [填空题] *_________________________________(答案:32) 16. 76-34 [填空题] *_________________________________(答案:42) 17. 56+4 [填空题] *_________________________________(答案:60) 18. 76-22 [填空题] *_________________________________(答案:54) 19. 49+8 [填空题] *_________________________________(答案:57) 20. 65-41 [填空题] *_________________________________(答案:24) 21. 54-35 [填空题] *_________________________________(答案:19) 22. 75-67 [填空题] *23. 28+45 [填空题] *_________________________________(答案:73) 24. 72-38 [填空题] *_________________________________(答案:34) 25. 80-50 [填空题] *_________________________________(答案:30) 26. 35+6 [填空题] *_________________________________(答案:41) 27. 80-63 [填空题] *_________________________________(答案:17) 28. 37+6 [填空题] *_________________________________(答案:43) 29. 30+24 [填空题] *_________________________________(答案:54) 30. 83-45 [填空题] *_________________________________(答案:38) 31. 60-15 [填空题] *_________________________________(答案:45) 32. 78+20 [填空题] *_________________________________(答案:98) 33. 17+6 [填空题] *_________________________________(答案:23) 34. 58-9 [填空题] *35. 86-43 [填空题] *_________________________________(答案:43) 36. 15+27 [填空题] *_________________________________(答案:42) 37. 48-37 [填空题] *_________________________________(答案:11) 38. 85-25 [填空题] *_________________________________(答案:60) 39. 26+24 [填空题] *_________________________________(答案:50) 40. 42-27 [填空题] *_________________________________(答案:15) 41. 96-29 [填空题] *_________________________________(答案:67) 42. 65+34 [填空题] *_________________________________(答案:99) 43. 38-19 [填空题] *_________________________________(答案:19) 44. 26+7 [填空题] *_________________________________(答案:33) 45. 47+14 [填空题] *_________________________________(答案:61) 46. 76-21 [填空题] *47. 28+33 [填空题] *_________________________________(答案:61) 48. 29+13 [填空题] *_________________________________(答案:42) 49. 16+59 [填空题] *_________________________________(答案:75) 50. 58+8 [填空题] *_________________________________(答案:66) 51. 39-23 [填空题] *_________________________________(答案:16) 52. 34+7 [填空题] *_________________________________(答案:41) 53. 74-34 [填空题] *_________________________________(答案:40) 54. 99-14 [填空题] *_________________________________(答案:85) 55. 85-14 [填空题] *_________________________________(答案:71) 56. 57-26 [填空题] *_________________________________(答案:31) 57. 63+7 [填空题] *_________________________________(答案:70) 58. 37-9 [填空题] *59. 44-27 [填空题] *_________________________________(答案:17) 60. 56-8 [填空题] *_________________________________(答案:48) 61. 24+66 [填空题] *_________________________________(答案:90) 62. 65-16 [填空题] *_________________________________(答案:49) 63. 97-89 [填空题] *_________________________________(答案:8) 64. 54-26 [填空题] *_________________________________(答案:28) 65. 33+18 [填空题] *_________________________________(答案:51) 66. 40-28 [填空题] *_________________________________(答案:12) 67. 83-35 [填空题] *_________________________________(答案:48) 68. 42+38 [填空题] *_________________________________(答案:80) 69. 76-27 [填空题] *_________________________________(答案:49) 70. 85-27 [填空题] *71. 44+41 [填空题] *_________________________________(答案:85) 72. 94-24 [填空题] *_________________________________(答案:70) 73. 30-11 [填空题] *_________________________________(答案:19) 74. 68+13 [填空题] *_________________________________(答案:81) 75. 91-25 [填空题] *_________________________________(答案:66) 76. 19+73 [填空题] *_________________________________(答案:92) 77. 80-7 [填空题] *_________________________________(答案:73) 78. 44+39 [填空题] *_________________________________(答案:83) 79. 34+29 [填空题] *_________________________________(答案:63) 80. 64-45 [填空题] *_________________________________(答案:19) 81. 52+38 [填空题] *_________________________________(答案:90) 82. 54+18 [填空题] *83. 46+29 [填空题] *_________________________________(答案:75) 84. 91-73 [填空题] *_________________________________(答案:18) 85. 38+27 [填空题] *_________________________________(答案:65) 86. 55-49 [填空题] *_________________________________(答案:6) 87. 67-28 [填空题] *_________________________________(答案:39) 88. 26+19 [填空题] *_________________________________(答案:45) 89. 46-35 [填空题] *_________________________________(答案:11) 90. 58+27 [填空题] *_________________________________(答案:85) 91. 43+27 [填空题] *_________________________________(答案:70) 92. 29+35 [填空题] *_________________________________(答案:64) 93. 97-29 [填空题] *_________________________________(答案:68) 94. 85-58 [填空题] *95. 64-14 [填空题] *_________________________________(答案:50) 96. 64+16 [填空题] *_________________________________(答案:80) 97. 80-55 [填空题] *_________________________________(答案:25) 98. 72-19 [填空题] *_________________________________(答案:53) 99. 46+17 [填空题] *_________________________________(答案:63) 100. 53-24 [填空题] *_________________________________(答案:29)。
两位数加两位数口算口算是一种能够提高计算能力和思维灵活性的方法。
在这篇文章中,我们将学习如何进行两位数加两位数的口算。
口算不仅可以帮助我们在日常生活中进行快速的计算,而且对于数学学习也非常有帮助。
基本概念在进行两位数加两位数的口算时,我们需要了解几个基本概念。
十位和个位两位数由十位和个位组成。
十位表示该数在十位数列中的位置,个位表示该数在个位数列中的位置。
例如,对于两位数34,3是十位,4是个位。
进位与不进位在进行两位数加两位数的口算时,我们需要注意进位和不进位的情况。
当个位相加的结果大于等于10时,需要进位。
进位是将个位的十位数字向前进一位并加到十位上。
口算步骤下面是进行两位数加两位数口算的基本步骤:1.将两个数的个位数相加。
2.如果个位数相加的结果大于等于10,进位到十位上。
3.将两个数的十位数相加,并加上进位的值。
4.将个位数和十位数相加后的结果就是最终的答案。
示例让我们通过几个示例来学习如何进行两位数加两位数的口算。
示例1我们先做一个简单的口算示例。
35 + 46 = ?1.先将个位数 5 和 6 相加,得到 11。
2.由于个位相加的结果大于等于10,需要进位。
3.将十位数 3 和 4 相加,再加上进位的值 1,得到 8。
4.所以结果是 81。
示例2现在我们来尝试一个稍微复杂一点的例子。
67 + 87 = ?1.先将个位数 7 和 7 相加,得到 14。
2.由于个位相加的结果大于等于10,需要进位。
3.将十位数 6 和 8 相加,再加上进位的值 1,得到 15。
4.所以结果是 154。
总结在这篇文章中,我们学习了如何进行两位数加两位数的口算。
口算是一种提高计算能力和思维灵活性的方法。
我们了解了口算的基本概念,包括十位和个位、进位与不进位。
我们还通过示例学习了口算的步骤,包括将个位数相加、判断是否需要进位、将十位数相加、最后得到结果。
通过口算的训练,我们可以在日常生活中更快地进行计算,也可以提高我们在数学学习中的能力。