7.81×3.1+6.9×4.29+3.52×6.9的简便计算是什么?
43个回答
展开全部
7.81×3.1+6.9×4.29+3652×6.9=7.81×3.1+(4.29+3.52)×6.9=7.81×(3.1+6.9)=7.81×10=78.1
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9×(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81×(3.1+6.9)
=7.81×10
=78.1
这个题就是两次用
用乘法分配律。
=7.81×3.1+6.9×(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81×(3.1+6.9)
=7.81×10
=78.1
这个题就是两次用
用乘法分配律。
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
7.81×3.1+6.9×4.29+3.52×6.9的简便计算是什么?
解:7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9×(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81×(3.1+6.9)
=7.81×10
=78.1。
解:7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9×(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81×(3.1+6.9)
=7.81×10
=78.1。
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:
7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9x(4.29+3.52)
=7.81x3.1+6.9x7.81
=7.81x(3.1+6.9)
=7.81x10
=78.1
7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9x(4.29+3.52)
=7.81x3.1+6.9x7.81
=7.81x(3.1+6.9)
=7.81x10
=78.1
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:
7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81(3.1+6.9)
=7.81×10
=78.1
7.81×3.1+6.9×4.29+3.52×6.9
=7.81×3.1+6.9(4.29+3.52)
=7.81×3.1+6.9×7.81
=7.81(3.1+6.9)
=7.81×10
=78.1
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