3×0.27×0.2怎么用简便运算?
24个回答
2021-10-01
展开全部
3×0.27×0.2=0.162
3×0.27=0.81
0.81×0.2=0.162
3×0.2=0.6
0.6×0.27=0.162
0.27×0.2=0.054
3×0.054=0.162
3×0.27=0.81
0.81×0.2=0.162
3×0.2=0.6
0.6×0.27=0.162
0.27×0.2=0.054
3×0.054=0.162
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
3×0.27×0.2
=3×0.3×0.9×0.2
=(3×0.3×0.2)×0.9
=0.18×1-0.18×0.1
=0.18-0.018
=0.162
=3×0.3×0.9×0.2
=(3×0.3×0.2)×0.9
=0.18×1-0.18×0.1
=0.18-0.018
=0.162
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
3×0.27×0.2=3×0.2×0.27=0.6×0.27=0.162,乘法交换律
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
3×0.27×0.2
=3×0.3×0.9×0.2
=3×(0.3×10)×(0.9÷10)×0.2
=3×3×0.09×0.2
=9×0.018
=(10-1)×0.018
=0.18-0.018
=0.162
=3×0.3×0.9×0.2
=3×(0.3×10)×(0.9÷10)×0.2
=3×3×0.09×0.2
=9×0.018
=(10-1)×0.018
=0.18-0.018
=0.162
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询