101×0.87-0.91×87怎么简便计算
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101×0.87-0.91×87怎么简便计算
101×0.87-0.91×87
=101×0.87-91×0.87
=(101-91)×0.87
=10×0.87
=8.7
101×0.87-0.91×87怎么简便计算
101×0.87-0.91×87
=101×0.87-91×0.87
=(101-91)×0.87
=10×0.87
=8.7