1.25×4.9+0.125的简便方法?
13个回答
展开全部
1.25×4.9+0.125
=1.25×4.9+1.25×0.1
=1.25×(4.9+0.1)
=1.25×5
=6.25
望采纳,谢谢!
=1.25×4.9+1.25×0.1
=1.25×(4.9+0.1)
=1.25×5
=6.25
望采纳,谢谢!
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
先把0.125换成(1.25×0.1),再简算
1.25×4.9+0.125
=1.25×4.9+1.25×0.1
=1.25×(4.9+0.1)
=1.25×5
=6.25
1.25×4.9+0.125
=1.25×4.9+1.25×0.1
=1.25×(4.9+0.1)
=1.25×5
=6.25
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
1.25x4.9+0.125的简便方法?
1.25x4.9+0.125
=0.125x49+0.125
=(49+1)x0.125
=50x0.125
=6.25
1.25x4.9+0.125
=0.125x49+0.125
=(49+1)x0.125
=50x0.125
=6.25
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
因为1.25×4.9=0.125×49,所以原式等于0.125×49+0.125运用乘法分配律逆运算就是0.125×(49+1)=0.125×50=6.25
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