26.64+6.37-18.64+13.63简便计算
问题描述:
26.64+6.37-18.64+13.63简便计算
答
26.64-18.64+(6.37+13.63)=8+20=28
答
(26.64-18.64)+(6.37+13.63)=28
答
(26.64-18.64)+(6.37+13.63)=8+20=28