7个回答
展开全部
1.21×3.8+2.42×3.1
=1.21×3.8+(1.21×2)×3.1
=1.21×3.8+1.21×(2×3.1)
=1.21×3.8+1.21×6.2
=1.21×(3.8+6.2)
=1.21×10
=12.1
=1.21×3.8+(1.21×2)×3.1
=1.21×3.8+1.21×(2×3.1)
=1.21×3.8+1.21×6.2
=1.21×(3.8+6.2)
=1.21×10
=12.1
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:1.21×3.8+2.42×3.1
=1.21×3.8+1.21×2×3.1
=1.21×3.8+1.21×(2×3.1)
=1.21×3.8+1.21×6.2
=1.21×(3.8+6.2)
=1.21×10
=12.1
=1.21×3.8+1.21×2×3.1
=1.21×3.8+1.21×(2×3.1)
=1.21×3.8+1.21×6.2
=1.21×(3.8+6.2)
=1.21×10
=12.1
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