125×27×28如何脱式简便运算?
7个回答
展开全部
125X27X28
=25x5x3x9x4x7
=25x4x5x3x9x7
=100x5x3x9x7
=1500x63
=1500(60+3)
=90000+4500
=94500
=25x5x3x9x4x7
=25x4x5x3x9x7
=100x5x3x9x7
=1500x63
=1500(60+3)
=90000+4500
=94500
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展开全部
125X27X28
=125X4X27X7
=500X189
=94500
=125X4X27X7
=500X189
=94500
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