整十数加、减整十数情境导入探究新知课堂小结课后作业100以内的加法和减法（一）课堂练习440座30座情境导入小朋友们去郊游，准备了这两辆车！40座30座探究新知70401.9040509050904050课堂练习5502.4409908803.508010703040601040463.60[ Tag ]
,,,,,整十数加、减整十数,情境导入,探究新知,课堂小结,课后作业,100以内的加法和减法（一）,课堂练习,4,40座,30座,情境导入,小朋友们去郊游，准备了这两辆车！,40座,30座,探究新知,70,40,1.,90,40,50,90,50,90,40,50,课堂练习,5,50,2.,4,40,9,90,8,80,3.,50,80,10,70,30,40,60,10,40,46,3.,60+