如题所述
乘法分配律
6.4x101-6.4
=6.4x(101-1)
=6.4x100
=640
6.4x101-6.4
=6.4x(101-1)
=6.4x100
=640
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第1个回答 2016-01-21
乘法分配律追答
=6.4X(101一1)
=6.4X100
=640