四位数减三位数的题目。急需!!!答:1035-789=,1035-246=,1053-789=,1053-269=,1053-284=,1035-749=,1035-286=,1053-764=,1089-324=,1089-325=,1098-756=,1098-342=,1206-859=,1206-349=,1098-352=,1098-742=,1098-356=,1206-847=,1089-364=,1089-365=,1098-675=,1098-423=,1305-879=,1305-429=,1089-432=,1026...