35*63-37*35怎么用简便计算

问题描述:

35*63-37*35怎么用简便计算

应该是
35*63+37*35=?
35*63+37*35
=35*(63+37)
=35*100
=3500

35*63-37*35
=(63-37)*35
=26*35
=910

35*(63-37)=35*26=910

35*63-37*35=(63-37)*35=26*35=910

35*(63-37)
=35*28
=35*(20+8)
=35*20+35*8
=700+(30+5)*8
=700+30*8+5*8
=700+240+40
=980