102.31×59 简便计算 急

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102.31×59 简便计算 急
102.31×59 简便计算 急

102.31×59 简便计算 急
102.31×59
=102.31×60-102.31
=6138.6-102.31
=6036.29

102.31×(60-1)=102.31×60-102.31=6036.29

102.31X(60-1)=102.31X60-102.31

102.31×60-102.31

(100+2.31)(60-1)=6000-100+(2+0.31)60-2.31
=5900+120+18.6-2.31
=6020+16.29
=6036.29