45.19-(21.821+30.19)+42.81简便计算方法?
4个回答
展开全部
根据题意,计算如下
原式=45.19-30.19-21.821+42.821
=15+21
=36
原式=45.19-30.19-21.821+42.821
=15+21
=36
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
45.19-(21.821+30.19)+42.81
=45.19-21.821-30.19+42.81
=(45.19-30.19)+42.81-21.821
=15+42.81-21.821
=57.81-21.821
=35.989
=45.19-21.821-30.19+42.81
=(45.19-30.19)+42.81-21.821
=15+42.81-21.821
=57.81-21.821
=35.989
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
解:原式=(45.19+42.81)-(21.821+30.19)
=88-52.011
=35.989
=88-52.011
=35.989
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
2020-07-28 · 知道合伙人教育行家
关注
展开全部
45.19-(21.821+30.19)+42.81
= (45.19+42.81)-(21.81+0.011+30.19)
= (45.19+42.81) - (21.81+30.19) -0.011
= 88 - 52 - 0.011
= 36 - 0.011
= 35.989
= (45.19+42.81)-(21.81+0.011+30.19)
= (45.19+42.81) - (21.81+30.19) -0.011
= 88 - 52 - 0.011
= 36 - 0.011
= 35.989
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