3.9ⅹ0.15 3.9用简便方法怎么算?
展开全部
=(4-0.1)*0.15
=4*0.15-0.1*0.15
=0.6-0.015
=0.585
=4*0.15-0.1*0.15
=0.6-0.015
=0.585
追答
=(4-0.1)*0.15
=4*0.15-0.1*0.15
=0.6-0.015
=0.585
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
3.9×0.15+3.9
=(0.15+1)×3.9
=1.15×(4-0.1)
=1.15×4-1.15×0.1
=4.6-0.115
=4.485
=(0.15+1)×3.9
=1.15×(4-0.1)
=1.15×4-1.15×0.1
=4.6-0.115
=4.485
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?
2020-04-23
展开全部
简便计算
3.9x0.15+3.9
=3.9x(1+0.15)
=3.9x1.15
=4x1.15-0.1x1.15
=4.6-0.115
=4.485
3.9x0.15+3.9
=3.9x(1+0.15)
=3.9x1.15
=4x1.15-0.1x1.15
=4.6-0.115
=4.485
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