7.81×1.45+3.14×2.19+1.69×7.81的简便计算方法？
6个回答
展开全部
=7.81x（1.45+1.69）+3.14x2.19
=7.81x3.14+3.14x2.19
=（7.81+2.19）x3.14
=10x3.14
=31.4
=7.81x3.14+3.14x2.19
=（7.81+2.19）x3.14
=10x3.14
=31.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
展开全部
=7.81x（1.45+1.69）+3.14x2.19
=7.81x3.14+3.14x2.19
=（7.81+2.19）x3.14
=10x3.14
=31.4
=7.81x3.14+3.14x2.19
=（7.81+2.19）x3.14
=10x3.14
=31.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
展开全部
=7.81*(1.45+1.69）+3.14*2.19
=3.14*(7.81+2.19)
=3.14*10
=31.4
=3.14*(7.81+2.19)
=3.14*10
=31.4
追答
=7.81*(1.45+1.69）+3.14*2.19
=3.14*(7.81+2.19)
=3.14*10
=31.4
=7.81*(1.45+1.69）+3.14*2.19
=3.14*(7.81+2.19)
=3.14*10
=31.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
展开全部
=7.81*(1.45+1.69）+3.14*2.19
=3.14*(7.81+2.19)
=3.14*10
=31.4
=3.14*(7.81+2.19)
=3.14*10
=31.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
展开全部
7.81×1.45+3.14×2.19+1.69×7.81
=7.81×(1.45+1.69）+3.14×2.19
=7.81×3.14+3.14×2.19
=(7.81+2.19）×3.14
=10×3.14
=31.4
=7.81×(1.45+1.69）+3.14×2.19
=7.81×3.14+3.14×2.19
=(7.81+2.19）×3.14
=10×3.14
=31.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
更多回答（4）
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
