14.6x46-46x4.5怎么简便
=46*(14.6-4.5)
=46*10.1
=46*(10+0.1)
=46*10+46*0.1
=460+4.6
=464.6
=46*10.1
=46*(10+0.1)
=46*10+46*0.1
=460+4.6
=464.6
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第1个回答 2016-06-06
4.5x0.75+0.75x6.1-2.6x0.75=(4.5+6.1-2.6)x0.75=8×0.75=6