0.034*0.5*0.6 102*0.45 用简便运算
问题描述:
0.034*0.5*0.6 102*0.45 用简便运算
答
乘法的结合律和分配率:
将0.034*0.5*0.6运用结合律
0.034*(0.5*0.6)
=0.034*0.3
=0.0102
102*0.45运用分配率
(100+2)*0.45
=100*0.45+2*0.45=
45+0.9
=45.9
答
用计算器撒~
答
0.034*0.5*0.6
=0.034*0.3
=0.0102
102*0.45
=(100+2)*0.45
=45+0.9
=45.9