人教版小学一年级数学下册第六课：两位数加一位数、整十数（含配套教案）课件PPT

两位数加一位数、整十数汇报人：模模网职位：设计部Your content to play here, or through your copy, paste in this box, and select only the text. Your content to play here, or through your copy, paste in this box, and select only the text.人教版一年级数学下册新课导入输入替换内容888ppt.com输入替换内容888ppt.com输入替换内容888ppt.com输入替换内容888ppt.com01 复习旧知print the presentation and make it into a film to be used in a wider field40＋7＝20＋5＝60＋8＝47256830＋20＝30＋30＝10＋50＝ 506060 情境引入print the presentation and make it into a film to be used in a wider field小林一共要写多少个字？你能提出什么数学问题？小林和小红已经写了多少个字？新课导入print the presentation and make it into a film to be used in a wider field 先算5＋2＝7。再算20＋7＝27。方法（一）借助小棒计算：新课导入print the presentation and make it into a film to be used in a wider field方法（二）利用拆分法：25＋2＝20572725＋2是先算5＋2。再算20＋7。新课导入print the presentation and make it into a film to be used in a wider field方法（一）借助小棒计算：先算20＋20＝40。再算40＋5＝45。新课导入print the presentation and make it into a film to be used in a wider field方法（二）利用拆分法：25＋20 ＝520404525＋20是先算20＋20。再算40＋5。新课导入print the presentation and make it into a film to be used in a wider field28＋5＝？你能提出什么数学问题？一共有多少瓶矿泉水？新课导入print the presentation and make it into a film to be used in a wider field28＋5＝233033先算28＋2＝30，再算30＋3＝33。还可以怎样算？说说28＋5你是怎样计算的。新课导入print the presentation and make it into a film to be used in a wider field28＋5＝2081333先算8＋5＝13，再算20＋13＝33。说说这样算的计算过程。你是怎样算的？做一做print the presentation and make it into a film to be used in a wider field471120113131861430144444 拓展练习输入替换内容888ppt.com输入替换内容888ppt.com输入替换内容888ppt.com输入替换内容888ppt.com02 拓展练习print the presentation and make it into a film to be used in a wider field20+13=30+16=3+62=41+5=4+50=4+51=40+12=20+17=60+15=334665465455523775 拓展练习print the presentation and make it into a film to be used in a wider field8+9= 79+8=7+6= 27+6=9+5= 39+5=6+4= 54+6=1333144410601787 拓展练习print the presentation and make it into a film to be used in a wider field箱里有56节旧电池。我又放进去9节。回收箱里现在有多少节旧电池？56 + 9 = 65（节）答：回收箱里现在有65节旧电池。拓展练习print the presentation and make it into a film to be used in a wider field√下面的计算对吗？把不对的改过来。64+8=727+73=8036+8=453+58=6045-5 =358+48 =5582-60=2239-7 =33√564044√6132 拓展练习print the presentation and make it into a film to be used in a wider field(1)小亮和小红一共有多少张画片？(2)小亮和小明一共有多少张画片？(3)他们三个人一共有多少张画片？24+6＝30（张）24+9＝33（张）24+6+9＝39（张）拓展练习print the presentation and make it into a film to be used in a wider field一包数学书和一包语文书一共是多少本？35+30 =65（本）答：一包数学书和一包语文书一共有65本。课后作业print the presentation and make it into a film to be used in a wider field第66页练习十五，第5题、第6题。非常感谢您的观看汇报人：模模网职位：设计部Your content to play here, or through your copy, paste in this box, and select only the text. Your content to play here, or through your copy, paste in this box, and select only the text.FASHON POWERPOINT

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