苏教版一年级下册数学ppt课件65两位数加两位数（进位）.pptx

两位数加两位数（进位）,6+9=,62+8=,65+4=,7+8=,27+2=,32+60=,15,70,69,15,29,92,口算,用竖式计算,34+12=23+14=,3 4,+1 2,2 3,+1 4,46,37,6,4,7,3,两人一共有多少枚邮票?,小明,小红,34+16=（）,两人一共有多少枚邮票?,枚,先用小棒摆一摆,把10根小棒捆成一捆。,34+16=50,10个一是1个十,4,10,5,0,34+16=50,34+16=,50,3 4 1 6 0,个位上4加6得10，向十位进1，个位写0.,1,5,从个位加起，满十进一,+,4,智慧城堡,加油啊！,65+28=,6,5,8,+,3,1,9,93,2,试一试,笔算加法要注意的问题:1.相同数位对齐；2.从个位加起；3.满10进1。,判断对错,1,5,45+29=,53+27=,49+8=,9+61=,想想做做,45+29=,4,5,9,+,4,1,7,74,2,想想做做,53+27=,5,37,+,0,1,8,80,2,49+8=,4,9,8,+,7,1,5,57,9+61=,9,1,+,0,1,7,70,6,说一说，十位上该是几？,+,4 6,3 9,9,5 3,8 7,+,+,+,4,4 3,6 5,在,里填什么数可以使它成为进位加法题？,+,1 3,5,在,里填什么数合适？,+,4,3,4,+,3,6,7,6,8,进位加法要记牢，相同数位要对齐，先从个位加起来，个位满十要进一。,儿 歌：,用竖式计算,35+47=14+56=74+19=5+35=42+38=26+15=54+38=9+43=,谢谢指导！,