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初一数学精选题库[39]{难度4}［利用等差数列特性找出数字位置］
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![初一数学精选题库[24]{难度4}［数值颠倒组合加总运算］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/7f99eb0f1139406e944fe25e524dddbc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=m6QFe1XigtFzJmwaoxdZimZK69s%3D)
App04:58![初一数学精选题库[39]{难度4}［利用等差数列特性找出数字位置］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f532a7f3c8ca40c299fd280a3a1086a7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=0oMH%2FFMRdMTfRXPbe3gqlarjRTE%3D)
App08:41![初一数学精选题库[50]{难度4}［三角形面积组合求直线方程式］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/3df31b28a0ea473c974d746bfea931c4~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=X8Tz9XGJHOHMvKAWGFe%2BRvxidDY%3D)
App17:56![初一数学精选题库[63]{难度4}［变形版等差数列］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/158c5a02df7b4be58e9dc4f6264f30f3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=DC%2BzpVZGiJscljynHJf9abc%2FkUU%3D)
App04:13![初一数学精选题库[69]{难度4}［长分数数列配对化简］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/cb83e3357bb14c549a201795290d8d96~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=epznPFyEV%2BcnlBDQQU4Jm3Mr%2F78%3D)
App04:31![初二数学精选题库[4]{难度4}［角平分线连续作图］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/46e28e38bf6c4e2fb40c760152181241~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=sf%2BpnNlw8CXwHGSU8FotBl9r0iI%3D)
App05:31![初一數學精選題庫[13]{難度5}［兩人繞圈跑步速率相遇距離計算］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/ea2868f3f5154e7ebed13864e84c2f1f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=v2Jb8IAvZdbpMxR5HxN%2BhSduuKA%3D)
App14:18![初一数学精选题库[25]{难度5}［等差数列区间总和型态分析］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/936861bc04194151a937a86536e51b65~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=3OY%2Br2XXyMM09JgmZQ6uj3JbvbA%3D)
App09:13![初一数学精选题库[31]{难度5}［推导三个数的最大公因数］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/cfe47c0413ef476785e1d123b10cbded~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=WgxLTG8bFfroJAMOplTV0S9TS1U%3D)
App14:04![初一数学精选题库[53]{难度5}［分数数列化简相消运算］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/e9a19cf05067439dacdead0702849193~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=g2weeRApSxQurtsI%2BdEMsag1maE%3D)
App08:35![初一数学精选题库[61]{难度5}［超长数列转换成等差数列］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/d4d3deb38a794b88b850d4df91b98762~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=63rbk9q9HsRS1KlQYhbHPsIEOmM%3D)
App03:57![初一数学精选题库[64]{难度5}［绝对值最小值的数线距离分析法］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/375cb3cc79b942e787251c4649d646fa~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=ezWUIZIksRuiQXgvgP4USgJ3DtM%3D)
App04:05![初一數學精選題庫[23]{難度6}［自動換幣機］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f31b15b1ff144addbf7f217e6436895e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=0PgGxQLmwEik1ryuT%2FGuLPe3eiQ%3D)
App11:22![初一数学精选题库[26]{难度6}［递减数列平均数］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/064b6ed4313d4005a51a5de694e11cdb~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=E%2Fl7IfyHTECbCTjaXpewgNHgf6Q%3D)
App13:18![初一数学精选题库[27]{难度6}［两人竞走速率追逐时间问题］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/1c638e827dcd4726883693dc5cf2b5dc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=FcL1JKpI%2B%2Bx4%2BTssYi5HDSmru1M%3D)
App10:19![初一数学精选题库[41]{难度6}［各位数字和为7的位数分析方法］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c583eac1863f44a5a8ca23ba0e543b7f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=eMGoXObSbDS9%2BWxFr6optkdX7rY%3D)
App12:46![初一数学精选题库[42]{难度6}［多位数为11的倍数判断法］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/26eabe9da6d54029803736b00728d1f6~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=xwGLm5%2Bk1f1elK6udMd%2FzwaOy0E%3D)
App10:26![初一数学精选题库[45]{难度6}［机车和车轮数目分析］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/84e4aca6b20f4be7b6c2b8390a122a14~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=GEyI40sFOuTQC%2BH9IlNkJk%2FMM1s%3D)
App14:34![初一数学精选题库[49]{难度6}［六位数字左右互换］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/87bc483e20ed4b92b11d2ee4c2c75884~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=N8ySBc%2BzWi9v9DKiUsxcl5mElMM%3D)
App05:26![初一数学精选题库[57]{难度6}［四位数字颠倒运算］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/3d35fb5b39cd47bb9bad7f50a0d309fc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=V8l7NctIMGzQF5sypijYGvQ8GnY%3D)
App06:06![初一数学精选题库[58]{难度6}［数列分拆相加］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/0ca20eceed384d41be6efd8b5dfd3d9a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=yNC64%2FmN08a7ZjAbfoLHRjjF1l8%3D)
App03:50![初一数学精选题库[68]{难度6}［五位数排列组合问题］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/5fef2cb42b5c432582957b4d6fed1ad3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=HJwREJ9U4VBYjmyg75PXgp%2FYaAQ%3D)
App03:07![初一數學精選題庫[21]{難度7}［數列排列組合選擇技巧］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/205543be06e24faeb924dfd0056ba093~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=oN4PXmqfF3jD0VKDdM2umaKfBfs%3D)
App07:33![初一数学精选题库[28]{难度7}［超长位数分段倍数推导问题］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/801ab25477de4cc799ca7904401f5533~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=TGotnO%2FDid%2BIq8rNtYwTKJW8CjA%3D)
App10:12![初一数学精选题库[43]{难度7}［9字数列求四位数和的最大最小值］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/c78cac4fa48449bbab1465fd36464f95~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=YZZo4%2FDP7vLkUJfnEEEloqgE5zQ%3D)
App21:10![初一数学精选题库[44]{难度7}［圣诞卡片装错的可能状况分析］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/53671999554b4484be1f91a09106afbc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=KLag80LuwOWIwIaIw%2FfuGWVMcv4%3D)
App10:46![初一数学精选题库[47]{难度7}［天然神的质数数列］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c002f58c43024e84b6c5123cd1c678c9~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=qKh2%2F1b%2F97%2FEXlIwOMBqS6jFNpY%3D)
App13:50![初一数学精选题库[55]{难度7}［整数数列拆解相消运算技巧］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/76a5cfc7f373435e945acc4fb0216930~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=AS9xnDERrA8gsKaUZ0JULh98%2FFc%3D)
App10:03![初一数学精选题库[67]{难度7}［两人合作两项工作］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/4cee2c39409d4bac95f4b45d26bf06c5~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=cOUVWgA3a%2BLjT1UHrSgb0Aj18MA%3D)
App03:43![初一數學精選題庫[16]{難度8}［分數數列拆解相消運算技巧］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/35c43e4b79be425f9230f3d8fbad8ed1~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=h9pMe6%2F7UZdpW14600trR6%2Byi%2Bc%3D)
App05:16![初一數學精選題庫[20]{難度8}［三位數位置變換直式運算技巧］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f9cf8725dbfd4d4b8dd34150f010e7cf~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=202502251559122188EF89E717E36736EC&requestFrom=704&version_code=80402&x-expires=1772006353&x-signature=st7gEHGl7oZkUBv%2F0wiqdzhdAIg%3D)
App10:08
