38.0/13.6*0.72 4.07*6.8+9.125 计算简便38.08/13.6*0.724.07*6.8+9.125
问题描述：
38.0/13.6*0.72 4.07*6.8+9.125 计算简便
38.08/13.6*0.72
4.07*6.8+9.125
答
30.08÷13.6x0.72
=30.08x68/5x0.72
答
67.9.31-1.125-7.875 68.640 128*45 69.8.2*1.6-0.336/4.2 l用简便的方法计算下面各题2.9*6.7 2.3 2.9 6.72*102-672*0.02
答
答：67.9.31-1.125-7.875 68.640 128*45 69.8.2*1.6-0.336/4.2 l用简便的方法计算下面各题2.9*6.7 2.3 2.9 6.72*102-672*0.02 .