1+3又6分之1+5又12分之1+7又20分之1+9又30分之1+11又42分之1的简便计算
2个回答
展开全部
1+3又6分之1+5又12分之1+7又20分之1+9又30分之1+11又42分之1
=(1+3+5+7+9+11)+(1/6+1/12+1/20+1/30+1/42)
=36+(1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7)
=36+(1/2-1/7)
=36+5/14
=41又5/14
(最后得数是41又14分之5。)
=(1+3+5+7+9+11)+(1/6+1/12+1/20+1/30+1/42)
=36+(1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7)
=36+(1/2-1/7)
=36+5/14
=41又5/14
(最后得数是41又14分之5。)
本回答被网友采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1+3又6分之1+5又12分之1+7又20分之1+9又30分之1+11又42分之1
=1+3+1/6+5+1/12+7+1/20+9+1/30+11+1/42
=(1+3+5+7+9+11)+1/6+1/12+1/20+1/30+1/42
=36+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7
=36+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7
=36+1/2-1/7
=36又14分之5
=1+3+1/6+5+1/12+7+1/20+9+1/30+11+1/42
=(1+3+5+7+9+11)+1/6+1/12+1/20+1/30+1/42
=36+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7
=36+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7
=36+1/2-1/7
=36又14分之5
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