0.68*9.4-6.8*0.24+68*3%怎么简便计算
问题描述：
0.68*9.4-6.8*0.24+68*3%怎么简便计算
答
0.68×9.4-6.8×0.24+68×3%
=0.68×9.4-0.68×2.4+0.68×3
=0.68×(9.2-2.4+3)
=0.68×10
=6.8