6.6×1.9÷6.6×1.9能简便吗
3个回答
展开全部
6.6×1.9÷6.6×1.9
=(6.6÷6.6)×(1.9×1.9)
=1×3.61
=3.61
=(6.6÷6.6)×(1.9×1.9)
=1×3.61
=3.61
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
6.6×1.9÷6.6×1.9
=6.6÷6.6×1.9×1.9
=1.9×1.9
=(2-0.1)×(2-0.1)
=2×2-2×2×0.1+0.1×0.1
=4-0.4+0.01
=3.61
=6.6÷6.6×1.9×1.9
=1.9×1.9
=(2-0.1)×(2-0.1)
=2×2-2×2×0.1+0.1×0.1
=4-0.4+0.01
=3.61
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