BD
分析:(1)除數(shù)是64,要使商是一位數(shù),那么被除數(shù)的前兩位組成的數(shù)就要小于64;
(2)要使商是兩位數(shù),那么被除數(shù)的前兩位組成的數(shù)字就要大于或等于64,據此即可解答.
解答:(1)要使商是一位數(shù),即□0<64,□的數(shù)只要小于7即可,
□里就可以填1,2,3,4,5,6;
(2)要使商是兩位數(shù),即□0≥64,□的數(shù)只要大于或等于7即可,
□里能填7,8,9;
故選:B;D.
點評:三位數(shù)除以兩位數(shù),被除數(shù)百位和十位組成的數(shù)字和除數(shù)比較大小,組成的數(shù)字比除數(shù)大或相等,商就是兩位數(shù),比除數(shù)小,商就是一位數(shù).