企源知识库

|4427327|
|5543443|
|7721621|
【正确答案】：|4 427 327| |5 543 443| |7 721 621| = |4 100 327| |5 100 443| |7 100 621| =100 |4 1 327| |5 1 443| |7 1 621| =100 |4 1 327| |1 0 116| |3 0 294| =100×(-1) |1 116| |3 294| =-100(294-348)=-100×(-54) =5400