0.32乘以12.5乘以2.5的简便方法
问题描述:
0.32乘以12.5乘以2.5的简便方法
答
0.32*12.5*2.5
=0.4**0.8*12.5*2.5
=0.4*2.5*0.8*12.5
=1*10
=10