人教版小学一年级数学下册第六课：两位数加一位数、整十数课件PPT

1、两位数加一位数、整十数汇报人：XXX 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XXX输入替换内容XXX输入替换内容XXX输入替换内容XXX01复 习 旧 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小林一共要写小林一共要写多少个字？多少个字？你能提出什么你能提出什么数学问题？数学问题？小林和小红已经小林和小红已经写了多少个字？写了多少个字？新 课 导 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）借助小棒计算：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：方法（二）利用拆分法：252205727252是先算是先算52。再算再算207。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：方法（一）借助小棒计算： 先算先

4、算202040。再算再算40545。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：方法（二）利用拆分法：2520 52040452520是先算是先算2020。再算再算405。新 课 导 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数学问题？数学问题？一共有多少瓶一共有多少瓶矿泉水？矿泉水？新 课 导 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。还可以怎样算？还可以怎样算？说说说说285你是你是怎样计算的。怎样计算的。新 课 导 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。说说这样算的计说说这样算的计算过程。算过程。你是怎样算的？你是怎样算的？做 一 做print the present

6、ation and make it into a film to be used in a wider field471120113131861430144444拓 展 练 习输入替换内容XXX输入替换内容XXXXX输入替换内容XXX输入替换内容XXX02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 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 练 习print the presentation and make it into a film to be used in a wider field箱里箱里有有5656节节旧电池。旧电池。我又放进去我又放进去9 9节节。回收箱里现在有多少回收箱里现在有多少节节旧电池？旧电池？56 56 + + 9 9 = = 6565（节节）答：回收箱里现在答：回收箱里现

8、在有有6565节节旧电池。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。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 =335640446132拓 展 练 习print the presentation and make it into a film to be used in a wider field(1)(1)小亮和小红一共有多少张画片

9、？小亮和小红一共有多少张画片？(2)(2)小亮和小明一共有多少张画片？小亮和小明一共有多少张画片？(3)(3)他们三个人一共有多少张画片？他们三个人一共有多少张画片？24+624+63030（张）（张）24+924+93333（张）（张）24+6+924+6+93939（张）（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？一包数学书和一包语文书一共是多少本？35+30 =65（ 本本 ）答：一包数学书和一包语文书一共有答：一包数学书和一包语文书一共有65本本。课 后 作 业print the presentation and make it into a film to be used in a wider field第第6666页练习十五，第页练习十五，第5 5题、第题、第6 6题。题。非常感谢您的观看汇报人：XXX 职位：设计部Your content to play here, or through your copy, pas