用简便方法计算下面各题 0.5*2.33*8 0.3*2.5*0.4
问题描述：
用简便方法计算下面各题 0.5*2.33*8 0.3*2.5*0.4
答
0.5*2.33*8
=（0.5*8）*2.33
=4*2.33
=9.32
0.3*2.5*0.4
= 0.3*（2.5*0.4）
=0.3*1
=0.3