分析:因被乘數(shù)的個位是9,被乘數(shù)與乘數(shù)乘積的個位是7,根據(jù)乘法口決可確定,被乘數(shù)的個位是3;被乘數(shù)與乘數(shù)乘積的十位是4,因被乘數(shù)個位與乘數(shù)乘積的結(jié)果要向前一位進2,根據(jù)乘法口決可確定,被乘數(shù)的十位是8;被乘數(shù)與乘數(shù)乘積的百位是5,因被乘數(shù)十位與乘數(shù)乘積的結(jié)果要向前一位進7,根據(jù)乘法口決可確定,被乘數(shù)的百位是2;被乘數(shù)與乘數(shù)乘積的千位是7,因被乘數(shù)百位與乘數(shù)乘積的結(jié)果要向前一位進2,根據(jù)乘法口決可確定,被乘數(shù)的千位是5;據(jù)此解答.
解答:解:因被乘數(shù)的個位是9,被乘數(shù)與乘數(shù)乘積的個位是7,根據(jù)乘法口決可確定,被乘數(shù)的個位是3;
被乘數(shù)與乘數(shù)乘積的十位是4,因被乘數(shù)個位與乘數(shù)乘積的結(jié)果要向前一位進2,根據(jù)乘法口決可確定,被乘數(shù)的十位是8;
被乘數(shù)與乘數(shù)乘積的百位是5,因被乘數(shù)十位與乘數(shù)乘積的結(jié)果要向前一位進7,根據(jù)乘法口決可確定,被乘數(shù)的百位是2;
被乘數(shù)與乘數(shù)乘積的千位是7,因被乘數(shù)百位與乘數(shù)乘積的結(jié)果要向前一位進2,根據(jù)乘法口決可確定,被乘數(shù)的千位是5;
故答案為:5283.
點評:本題的關(guān)鍵是要從被乘數(shù)與乘數(shù)積的末尾入手,根據(jù)乘法口決進行推理.