114网址导航3.51x49＋35.1x5.1＋49x51用简更方法计算
☆异鸣★8014
3.51x49+35.1x5.1+49x51=3.51×（49+51）+（50-1）×（50+1）=3.51×100+50×50-1×1=351+2500-1=2850
满意采纳，万分感谢！
为您推荐：
其他类似问题
扫描下载二维码404 Not Found
404 Not Found
The requested URL was not found on this server. Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!
http://www.bxwx8.org/modules/article/reader.php?aid=55766&cid=
45-76-198-249千亿***_千亿***官网Bad Request (Invalid Hostname)