四位数减三位数的题目。急需!!!答:1089-432=,1026-589=,1026-437=,1026-587=,1089-452=,1089-457=,1062-589=,1062-473=,1098-623=,1305-476=,1062-479=,1305-826=,1305-479=,1026-539=,1026-489=,1062-489=,1026-489=,1026-537=,1062-489=,1062-579=,1062-583=,1026-439=,1026-587=,1062-473=,1098-623=,1503...