如题所述
58x46十56x58一58x2用简便计算
=(46+56-2)x58
=(46+54)x58
=100x58
=5800
=(46+56-2)x58
=(46+54)x58
=100x58
=5800
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第1个回答 2016-04-02
=58x(46+56-2)=58x100=5800