17.82+4.47-6.83+3.53的简便算法
问题描述:
17.82+4.47-6.83+3.53的简便算法
答
17.82+4.47-6.83+3.53=17.82+0.01-6.83+(4.47+3.53)-0.01
=17.83-6.83+8-0.01
=18.99