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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,整十数加一位数,及相应的减法,上饶县石狮小学,黄闽霞,整十数加一位数 上,1,口算,:,10+8=7+10=15-10=,10+6=,4+10=,18-10=,18,17,5,16,14,8,18 17516148,2,说说数的组成:,25,63,_,个十,,_,个一,,合起来是,_,。,5,2,25,_,个十,,_,个一,,合起来是,_,。,3,6,63,说说数的组成:25 63_ 个十,_个一,5,3,1.5,个十和,8,个一合起来是(,)。,58,2.6,个十和,3,个一合起来是()。,3.48,里面有()个十和()个一。,4.27,里面有()个十和()个一。,63,4,8,2,7,说一说:,25,5,6,1.5个十和8个一合起来是()。58 2,4,根据你看到的信息,你能提出一个数学问题吗?,根据你看到的信息,你能提出一个数学问题吗?,5,一共有几本写字本?,30,2,32,3,个十,2,个一,绿色圃中小学教育网,http:/,2+30=,32,一共有几本写字本?30 2,6,20+1=,21,40+3=,43,60+5=,65,30+4=,34,快速口算:,(,几十,)加(,几,),=,(几十,几,),7+20=,27,8+40=,48,6+30=,36,5+60=,65,(,几,)加(,几十,),=,(几十,几,),20+1=21 40+3=43,7,如果老师拿走,2,本,还剩,几本?,如果老师拿走,3,0,本,还剩,几本?,32,2,30,3,个十和,2,个一,2,个一,3,个十,32,30,2,3,个十和,2,个一,3,个十,2,个一,绿色圃中小学教育网,http:/,如果老师拿走2本,还剩如果老师拿走30本,还剩 32,8,83-3,80,快速口算:,45-5,40,87-7,80,64-4,60,76-6,70,71-1,70,98-8,90,32-2,30,(,几十,几,)减(,几,),几十,83-380快速口算:45-54087-78064-4,9,小 结:,(,1,)几十加,几,等于几十,几,(,2,),几,加几十等于几十,几,(,3,)几十,几,减,几,等于几十,(,4,)几十,几,减几十等于,几,小 结:(1)几十加几等于几十几(2)几加几十等于几十几(,10,游戏闯关,游戏闯关,11,第一关,第一关,12,20+8,8+20,2+50,36-6,49-9,28-8,45-5,50+2,40+5,摘苹果,28,52,30,45,20,40,20+88+202+5036-649-928-845-550,13,第二关,第二关,14,50,6,56,56,50,6,56,6,50,摆一摆:,先摆,5,捆,再摆,6,根,然后,列出相应的算式。,绿色圃中小学教育网,http:/,506565650656650 摆一摆:先摆5捆,再摆6根,,15,第三关,第三关,16,.,77,80,60,35,70,84-4,30+5,62-2,70+7,78-8,小动物回家,.778060357084-430+562-270+778-,17,30+,(),=32 32,(),=30,(),+6=76,(),6=70,2,2,70,76,知识拓展,89,()(),63,()(),()(,),78,()(),21,80,9,60,3,70,8,20,1,30+()=32 32()=3022707,18,再见,再见,19,9,、,春去春又回,新桃换旧符。在那桃花盛开的地方,在这醉人芬芳的季节,愿你生活像春天一样阳光,心情像桃花一样美丽,日子像桃子一样甜蜜,。,2024/11/14,2024/11/14,Thursday,November 14,2024,10,、,人的志向通常和他们的能力成正比例,。,2024/11/14,2024/11/14,2024/11/14,11/14/2024 5:17:32 PM,11,、,夫学须志也,才须学也,非学无以广才,非志无以成学,。,2024/11/14,2024/11/14,2024/11/14,Nov-24,14-Nov-24,12,、越是无能的人,越喜欢挑剔别人的错儿。,2024/11/14,2024/11/14,2024/11/14,Thursday,November 14,2024,13,、,志不立,天下无可成之事,。,2024/11/14,2024/11/14,2024/11/14,2024/11/14,11/14/2024,14,、,Thank you very much for taking me with you on that splendid outing to London.It was the first time that I had seen the Tower or any of the other famous sights.If Id gone alone,I couldnt have seen nearly as much,because I wouldnt have known my way about.,。,14 十一月 2024,2024/11/14,2024/11/14,2024/11/14,15,、,会当凌绝顶,一览众山小,。,十一月 24,2024/11/14,2024/11/14,2024/11/14,11/14/2024,16,、,如果一个人不知道他要驶向哪头,那么任何风都不是顺风,。,2024/11/14,2024/11/14,14 November 2024,17,、,一个人如果不到最高峰,他就没有片刻的安宁,他也就不会感到生命的恬静和光荣,。,2024/11/14,2024/11/14,2024/11/14,2024/11/14,谢谢观看,THE END,9、春去春又回,新桃换旧符。在那桃花盛开的地方,在这醉人芬芳,20,
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