脱式计算:654321*123456-654322*123455

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 22:09:07
脱式计算:654321*123456-654322*123455

脱式计算:654321*123456-654322*123455
脱式计算:654321*123456-654322*123455

脱式计算:654321*123456-654322*123455
原式=654321×123455+654321-654322×123455
=(654321-654322)×123455+654321
=654321-123455
=530866

原式=654321*(123455+1)-(654321+1)*123455
=654321*123455+654321-654321*123455-123455
=654321-123455
=530866