101×0.72-0.91×78怎么算
采用分配律，
原式=101×0.72-0.91×78
=（100+1）x0.72-0.91x（70+8）
=100x0.72+0.72-0.91x70-0.91x8
=72+0.72-63.7-7.28
=72.72-70.98
=1.74
原式=101×0.72-0.91×78
=（100+1）x0.72-0.91x（70+8）
=100x0.72+0.72-0.91x70-0.91x8
=72+0.72-63.7-7.28
=72.72-70.98
=1.74
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第1个回答 2017-09-18
101×0.72-0.91×78
＝72.72-70.98
＝1.74
＝72.72-70.98
＝1.74
