人教版小學(xué)一年級數(shù)學(xué)下冊第六課：兩位數(shù)加一位數(shù)、整十?dāng)?shù)課件PPT

1、兩位數(shù)加一位數(shù)、整十?dāng)?shù)匯報人：XXX 職位：設(shè)計部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.人教版一年級數(shù)學(xué)下冊新 課 導(dǎo) 入輸入替換內(nèi)容XXX輸入替換內(nèi)容XXX輸入替換內(nèi)容XXX輸入替換內(nèi)容XXX01復(fù) 習(xí) 舊 知print the presentation and

2、 make it into a film to be used in a wider field407205608472568302030301050 506060情 境 引 入print the presentation and make it into a film to be used in a wider field小林一共要寫小林一共要寫多少個字？多少個字？你能提出什么你能提出什么數(shù)學(xué)問題？數(shù)學(xué)問題？小林和小紅已經(jīng)小林和小紅已經(jīng)寫了多少個字？寫了多少個字？新 課 導(dǎo) 入print the presentation and make it into a film to be used

3、in a wider field 先算先算527。再算再算20727。方法（一）借助小棒計算：方法（一）借助小棒計算：新 課 導(dǎo) 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：方法（二）利用拆分法：252205727252是先算是先算52。再算再算207。新 課 導(dǎo) 入print the presentation and make it into a film to be used in a wider field方法（一）借助小棒計算：方法（一）借助小棒計算： 先算先

4、算202040。再算再算40545。新 課 導(dǎo) 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：方法（二）利用拆分法：2520 52040452520是先算是先算2020。再算再算405。新 課 導(dǎo) 入print the presentation and make it into a film to be used in a wider field285？你能提出什么你能提出什么數(shù)學(xué)問題？數(shù)學(xué)問題？一共有多少瓶一共有多少瓶礦泉水？礦泉水？新 課 導(dǎo) 入print the

5、presentation and make it into a film to be used in a wider field285233033先算先算28230，再算再算30333。還可以怎樣算？還可以怎樣算？說說說說285你是你是怎樣計算的。怎樣計算的。新 課 導(dǎo) 入print the presentation and make it into a film to be used in a wider field28520 81333先算先算8513，再算再算201333。說說這樣算的計說說這樣算的計算過程。算過程。你是怎樣算的？你是怎樣算的？做 一 做print the present

6、ation and make it into a film to be used in a wider field471120113131861430144444拓 展 練 習(xí)輸入替換內(nèi)容XXX輸入替換內(nèi)容XXXXX輸入替換內(nèi)容XXX輸入替換內(nèi)容XXX02拓 展 練 習(xí)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 練 習(xí)print the presen

7、tation 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 練 習(xí)print the presentation and make it into a film to be used in a wider field箱里箱里有有5656節(jié)節(jié)舊電池。舊電池。我又放進(jìn)去我又放進(jìn)去9 9節(jié)節(jié)?；厥障淅铿F(xiàn)在有多少回收箱里現(xiàn)在有多少節(jié)節(jié)舊電池？舊電池？56 56 + + 9 9 = = 6565（節(jié)節(jié)）答：回收箱里現(xiàn)在答：回收箱里現(xiàn)

8、在有有6565節(jié)節(jié)舊電池。舊電池。拓 展 練 習(xí)print the presentation and make it into a film to be used in a wider field下面的計算對嗎？把不對的改過來。下面的計算對嗎？把不對的改過來。64+8=727+73=8036+8=453+58=6045-5 =358+48 =5582-60=2239-7 =335640446132拓 展 練 習(xí)print the presentation and make it into a film to be used in a wider field(1)(1)小亮和小紅一共有多少張畫片

9、？小亮和小紅一共有多少張畫片？(2)(2)小亮和小明一共有多少張畫片？小亮和小明一共有多少張畫片？(3)(3)他們?nèi)齻€人一共有多少張畫片？他們?nèi)齻€人一共有多少張畫片？24+624+63030（張）（張）24+924+93333（張）（張）24+6+924+6+93939（張）（張）拓 展 練 習(xí)print the presentation and make it into a film to be used in a wider field一包數(shù)學(xué)書和一包語文書一共是多少本？一包數(shù)學(xué)書和一包語文書一共是多少本？35+30 =65（ 本本 ）答：一包數(shù)學(xué)書和一包語文書一共有答：一包數(shù)學(xué)書和一包語文書一共有65本本。課 后 作 業(yè)print the presentation and make it into a film to be used in a wider field第第6666頁練習(xí)十五，第頁練習(xí)十五，第5 5題、第題、第6 6題。題。非常感謝您的觀看匯報人：XXX 職位：設(shè)計部Your content to play here, or through your copy, pas