_HomePageArchiveCallback({data:{ "count": 4, "totalCount": 0, "list": [ { "lineId": "133735", "categoryId": 0, "subject": "“关于 任意两位数 乘 任意两位数 的速算”?", "ownerId": 6732746, "userId": 6732746, "ownerName": "聂娟6732746", "author": "聂娟6732746", "commentCount": 1, "forwardCount": 0, "praiseCount": 0, "visitorCount": 0, "hitCount": 0, "summary": "任意两位数 乘 任意两位数\r\n口决:头头乘百,尾尾乘一;头尾乘十,尾头乘十。再把结果相加。\r\nEG:2 3 45 =1035\r\n2 4 100 = 800\r\n3 5 1=15\r\n2 5 10 =100\r\n3 4 10 = 120\r\n 1035\r\n", "isDraft": false, "isEssential": false, "isAllowComment": true, "isAllowForward": true, "cover": null, "coverFullPath": "", "featuredImage": "", "featuredImagePath": [ "" ], "isSetTop": false, "privacyStatus": 2, "auditStatus": 40, "auditStatusDescription": "通过审核", "pubTime": "2014-01-10 12:05:53" }, { "lineId": "120114", "categoryId": 0, "subject": "这样的几类分数 “不是最简分数”?", "ownerId": 6732746, "userId": 6732746, "ownerName": "聂娟6732746", "author": "聂娟6732746", "commentCount": 1, "forwardCount": 0, "praiseCount": 0, "visitorCount": 0, "hitCount": 0, "summary": "最简分数的定义 :分子和分母只有公因数1。\r\n不是最简分数:分子和分母除了公因数1,还有其他公共因数。\r\n11337 8\r\n1、分子和分母是倍数关系,那它一定不是一个最简分数。如:----- ----- --------- ......\r\n22 34956\r\n\r\n\r\n 2 6 10 76\r\n2、分子和分母都是 2 的倍数(末尾数字是:2、4、6、8、0 )的数,那它一定不是一个最简分数。如:--", "isDraft": false, "isEssential": false, "isAllowComment": true, "isAllowForward": true, "cover": null, "coverFullPath": "", "featuredImage": "", "featuredImagePath": [ "" ], "isSetTop": false, "privacyStatus": 2, "auditStatus": 40, "auditStatusDescription": "通过审核", "pubTime": "2013-12-20 10:12:30" }, { "lineId": "111225", "categoryId": 0, "subject": "这样的分数是“最简分数”?(上)", "ownerId": 6732746, "userId": 6732746, "ownerName": "聂娟6732746", "author": "聂娟6732746", "commentCount": 0, "forwardCount": 0, "praiseCount": 0, "visitorCount": 0, "hitCount": 0, "summary": "怎样一眼判断 最简分数?(上)最简分数\r\n什么叫最简分数?即:分子和分母只有公因数1的分数。\r\n有几类最简分数,是可以一眼就断定它是最简分数的。总结如下:\r\n 2 5 121 99\r\n(1)分子和分母是相邻的两个自然数(0除外),那它一定是一个最简分数。如:----- ----- ----- ----- ......\r\n 3 6122 100\r\n\r\n 11 1 1\r\n(2)分子是1的分数,那它一定", "isDraft": false, "isEssential": false, "isAllowComment": true, "isAllowForward": true, "cover": null, "coverFullPath": "", "featuredImage": "", "featuredImagePath": [ "" ], "isSetTop": false, "privacyStatus": 2, "auditStatus": 40, "auditStatusDescription": "通过审核", "pubTime": "2013-12-06 04:45:06" }, { "lineId": "110850", "categoryId": 1591282, "subject": "生活中如何取近似值?", "ownerId": 6732746, "userId": 6732746, "ownerName": "聂娟6732746", "author": "聂娟6732746", "commentCount": 0, "forwardCount": 0, "praiseCount": 0, "visitorCount": 0, "hitCount": 0, "summary": " 1.题例:\r\n  做一种奶油蛋糕,每个要7.5克奶油,50克奶油最多可以做成多少个这样的蛋糕?\r\n  500.75=66.66667(个)\r\n  2.错误原因分析:\r\n  该题在求蛋糕个数取近似值时,许多同学往往根据四舍五入法,取近似值,而不考虑实际生活情况,得67个蛋糕。而实际生活中在做完66个整蛋糕后,剩下的50克奶油并不够做一个完整的蛋糕。\r\n  3.解题思路点拨:\r\n  该题在解题时应考", "isDraft": false, "isEssential": false, "isAllowComment": true, "isAllowForward": true, "cover": null, "coverFullPath": "", "featuredImage": "", "featuredImagePath": [ "" ], "isSetTop": false, "privacyStatus": 2, "auditStatus": 40, "auditStatusDescription": "通过审核", "pubTime": "2013-12-04 11:34:10" } ] }})