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

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