三年级数学上册计算题专项竞赛题姓名:_班级:_分数:_一、口算(20分)3005= 24003= 153= 8044=9500= 408= 207= 205=903= 642= 149111= 7007=4030= 909= 233= 4004=504= 1024= 5005= 8004=二、列竖式计算。(36分)(1)3604= (2)2083= (3)1045= (4)1256 (5)4504= (6)2504=(7)2284= (8)1605= (9)3122=(10)2343= (11)963= (12)3505=三、脱式计算。(44分)(1)48625 (2)6(121-103) (3)7286= = = = =(4)6+256 (5)31225 (6)6(810-690)= = = = =(7)2534 (8)84+133 (9)32086= = = = =(10)90+844 (11)1525 (12)28525= = = = =90-4.8= 45.2+12.05= 100+45.1=104.98+102.3= 205-42.6= 23.6+1.7= 2