6.9×3.14-5.6×1.3的简便运算怎么算?
展开全部
6.9x3.14-5.6x1.3
=(1.3x3+3)x3.14-5.6x1.3
=1.3x3x3.14+3x3.14-5.6x1.3
=1.3x9.42-5.6x1.3+9.42
=1.3x(9.42-5.6)+9.42
=1.3x3.82+9.42
=(1+0.3)x3.82+9.42
=3.82+1.146+9.42
=4.966+9.42
=14.386
=(1.3x3+3)x3.14-5.6x1.3
=1.3x3x3.14+3x3.14-5.6x1.3
=1.3x9.42-5.6x1.3+9.42
=1.3x(9.42-5.6)+9.42
=1.3x3.82+9.42
=(1+0.3)x3.82+9.42
=3.82+1.146+9.42
=4.966+9.42
=14.386
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
6.9x3.14-5.6x1.3
=(1.3x3+3)x3.14-5.6x1.3
=1.3x3x3.14+3x3.14-5.6x1.3
=1.3x9.42-5.6x1.3+9.42
=1.3x(9.42-5.6)+9.42
=1.3x3.82+9.42
=(1+0.3)x3.82+9.42
=3.82+1.146+9.42
=4.966+9.42
=14.386
=(1.3x3+3)x3.14-5.6x1.3
=1.3x3x3.14+3x3.14-5.6x1.3
=1.3x9.42-5.6x1.3+9.42
=1.3x(9.42-5.6)+9.42
=1.3x3.82+9.42
=(1+0.3)x3.82+9.42
=3.82+1.146+9.42
=4.966+9.42
=14.386
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
=3×1.3×3.14-1.3×5.6=(3×3.14-5.6)×1.3=4.966
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
6.9×3.14-5.6×1.3的简便运算怎么算?
=21.666-7.28
=14.386
望采纳 谢谢~~
=21.666-7.28
=14.386
望采纳 谢谢~~
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
6.9×3.14-5.6×1.3
=3×1.3×3.14-1.3×5.6
=(3×3.14-5.6)×1.3
=4.966
=3×1.3×3.14-1.3×5.6
=(3×3.14-5.6)×1.3
=4.966
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