9.08×1.8-3.7的简便算法
9.08×1.8-3.7
=9.08×1.8-2×1.8-0.1
=16.344-2×1.8-0.1
=16.344-3.6-0.1
=12.744-0.1
=12.644
这样对吗?不对的话请指教,满意再加分,反正我多的是