7.5乘以2.3加1.9乘以2.5加12.5乘以0.4的简便运算
1个回答
展开全部
7.5×2.3+1.9×2.5+12.5×0.4
=2.5×6.9+1.8×2.5+2.5×2
=2.5×(6.9+1.8+2)
=2.5×10.7
=2.5×10+2.5×0.7
=25+1.75
=26.75
=2.5×6.9+1.8×2.5+2.5×2
=2.5×(6.9+1.8+2)
=2.5×10.7
=2.5×10+2.5×0.7
=25+1.75
=26.75
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