3.8×2.6×0.25如何进行简便计算
展开全部
(1)
3.8×2.6×0.25
=(1.9x2)x(1.3x2)x0.25
=1.9x1.3x(4x0.25)
=1.9x1.3
=(1.9+0.1)x1.3-0.13
=2.6-0.13
=2.47
(2)
3.8×2.6×0.25
=(3.8+0.2)x2.6x0.25-0.2x2.6x0.25
=2.6x4x0.25-0.13x4x0.25
=2.47
3.8×2.6×0.25
=(1.9x2)x(1.3x2)x0.25
=1.9x1.3x(4x0.25)
=1.9x1.3
=(1.9+0.1)x1.3-0.13
=2.6-0.13
=2.47
(2)
3.8×2.6×0.25
=(3.8+0.2)x2.6x0.25-0.2x2.6x0.25
=2.6x4x0.25-0.13x4x0.25
=2.47
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
