4.56 0.08-1.64用简便算怎么算
问题描述:
4.56 0.08-1.64用简便算怎么算
答
4.56+0.08-1.64
=4+0.56+0.08-1-0.64
=(4-1)+(0.56+0.08)-0.64
=3+0.64-0.64
=3