1.09乘9.9减9.9用简便计算方法?
展开全部
1.09×9.9-9.9
=(1.09-1)×9.9
=0.09×9.9
=0.09×(10-0.1)
=0.09×10-0.09×0.1
=0.9-0.009
=0.891
=(1.09-1)×9.9
=0.09×9.9
=0.09×(10-0.1)
=0.09×10-0.09×0.1
=0.9-0.009
=0.891
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