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,*,苏教版一年级下册两位数加一位数进位加法,复 习,30+6,=,36,70+29,=,99,60+15,=,75,48+50,=,98,4+81,=,85,8+6,4,10,=14,2,9+7,=16,10,1,6,8,=12,4,+,新 授,小红,小亮,小明,小亮和小红一共多少张？,小明和小亮一共多少张？,小明和小红一共多少张？,24,6,24,9,9,6,=15,10,24,6,1,=30,24,6,=30,24,6,先算,4,+,6,=,10,再算,20+10=30,4,10,20,小红,小亮,小明,小亮和小红一共多少张？,小明和小亮一共多少张？,24,6,30,24,9,小亮和小红一共多少张？,小亮和小红一共多少张？,24,9,13,=33,24,9,=33,4,13,20,先算,4,+,9,=,13,再算,20+13=33,先算,4,+,9,=,13,再算,20+13=33,24,9,33,先算,4,+,6,=,10,再算,20+10=30,24,6,30,2,3,2,3,练 习,填一填，说说你是怎么算的？,38,+,2,=,26,+,7,=,40,30,8,10,先算,8,+,2,=,10,再算,30,+10,=,40,20,6,13,33,先算,6,+,7,=,13,再算,20,+13,=,33,填一填，说说先算什么，再算什么？,38+9=,+,=,+,=,先算,再算,49+7=,47,9,7,16,40,16,56,56,+,=,+,=,先算,再算,8,9,17,30,17,47,7,+,3=,10,7+,4,3=,5,0,7+,8,3=,9,0,算一算，比一比。,4+8=,12,3,4+8=,5,4+8=,算一算，比一比。,4,2,6,2,9+6=,15,9+,4,6=,5,5,9+,7,6=,8,5,算一算，比一比。,小兰应付多少元？,16,+,4,20,小青应付多少元？,25,+,9,34,小玉应付多少元？,38,+,9,47,拓 展,找规律填数。,12,18,24,（）,（）,（）。,30,36,42,+6,+6,+6,+6,8,16,24,32,（）（）（）。,40,48,56,+8,+8,+8,+8,18,27 36,（）（）（）,+9,+9,+9,+9,45,54,63,，,，,，,，,，,，,，,，,。,总 结,两位数加一位数,（进位）,先算个位加个位。,个位满十，向十位进一。,再 见,有,3,只兔子去拔萝卜，老大拔了,23,根，老二拔了,20,根，小兔子只拔了,9,根。,3,只兔子一共拔了多少根？,23,+,20,43,43,+,9,52,第三关“做一做”,45+6=,7+63=,74+9=,第三关“做一做”,45+6=,7+63=,74+9=,10,24,9,3,33,24,9,先圈一圈，再计算。,38+2=,+,=,+,=,先算,再算,+,=,+,=,先算,再算,26+7=,8,2,10,30,10,40,40,6,7,13,20,13,33,33,填一填，说说先算什么，再算什么？,38+2=,+,=,+,=,先算,再算,26+7=,40,6,7,13,20,13,33,33,+,=,+,=,先算,再算,8,2,10,30,10,40,10,24,9,1,33,24,9,先算,24,+,6,=,30,再算,30+3=33,24,9,33,3,30,6,先算,24,+,6,=,30,再算,30,+3=33,先算,4,+,6,=,10,再算,20+10=30,