如题所述
第1个回答 2015-05-02
原式
=(38+25)x25
=63x25
=(64-1)x25
=64x25-1x25
=16x4x25-25
=16x100-25
=1600-25
=1575本回答被网友采纳
=(38+25)x25
=63x25
=(64-1)x25
=64x25-1x25
=16x4x25-25
=16x100-25
=1600-25
=1575本回答被网友采纳
第2个回答 2015-05-02
38*25+25*25=(38+25)*25=63*25=1575 望采纳