打开App
初一数学精选题库[26]{难度6}［递减数列平均数］
遞減數列平均數五元一次聯立方程式分析
初一数学精选题库50/72
![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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=ED9j2A6M9nkTxo%2F1t32m76DEvwE%3D)
App11:22![初一数学精选题库[26]{难度6}［递减数列平均数］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/064b6ed4313d4005a51a5de694e11cdb~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=VCDvfrE6DlT%2BnOmHCTo03PucMqA%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=Liuj%2FoAbZIxSgQMQdZuiy%2B7QqQ4%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=mEFL30xumx4DOZv2k47T5VPmyNU%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://p3-sign.bdxiguaimg.com/tos-cn-i-0004/26eabe9da6d54029803736b00728d1f6~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=m0DP5OHRR5DUz4j%2FGT7m%2FRiH11Y%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=YTew4rxeXqSgWWg5QyqPo%2F%2FW1ug%3D)
App14:34![初一数学精选题库[49]{难度6}［六位数字左右互换］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/87bc483e20ed4b92b11d2ee4c2c75884~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=miB%2FqYSAOs%2F%2FNPOOGq1GOW1Qsvc%3D)
App05:26![初一数学精选题库[57]{难度6}［四位数字颠倒运算］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/3d35fb5b39cd47bb9bad7f50a0d309fc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=BWg8WZ6tISh7ZgfLxUiGT25TN0Q%3D)
App06:06![初一数学精选题库[58]{难度6}［数列分拆相加］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/0ca20eceed384d41be6efd8b5dfd3d9a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=m3LKAVDqIRurCB0LDzLm5%2B2r5Gk%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://p26-sign.bdxiguaimg.com/tos-cn-i-0004/5fef2cb42b5c432582957b4d6fed1ad3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=8neHaYzETc9OHjKWGIdOf51zCe4%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=E5RNU9%2F5Gy4XGBC4ghr4BtJY5Eo%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://p3-sign.bdxiguaimg.com/tos-cn-i-0004/801ab25477de4cc799ca7904401f5533~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=bzXfuTFZ%2BxPT3TQ84DG6ohkvAdY%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://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c78cac4fa48449bbab1465fd36464f95~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=Qnzbs%2BIpUw%2F5L8HnwcDDMyWMpVo%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://p26-sign.bdxiguaimg.com/tos-cn-i-0004/53671999554b4484be1f91a09106afbc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=4Kgf%2BbbFxh%2BEqW6pyTIZjvt%2BUJE%3D)
App10:46![初一数学精选题库[47]{难度7}［天然神的质数数列］](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/c002f58c43024e84b6c5123cd1c678c9~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=0wxjEro3%2BYFABX%2Fb9r8LljRxx8A%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://p26-sign.bdxiguaimg.com/tos-cn-i-0004/76a5cfc7f373435e945acc4fb0216930~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=k1mx2u8KAizFNVAHA%2FHiIt6hELg%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=RsEtPd3KIPMA%2Br1FVDJdcOqsgxc%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=SS0Np%2BmHgjCsa0QO6QQVTlGuf68%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&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=s3pJmHQjcMea9Ffa%2FejTe%2F6Anks%3D)
App10:08![初一数学精选题库[56]{难度8}［完全平方式求解］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/52379e123ec041c3b4b67e5b6805f378~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=v2qEBOAgSwr0tN9FNTg01qeujAA%3D)
App15:17![初一數學精選題庫[18]{難度9}［平方數列用平方差公式］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/93e19fd761f04283becfd8eb495569d7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=m1IInTG%2F%2FvC6Q1GIzQf2HrMP7Z0%3D)
App14:27![初一数学精选题库[29]{难度9}［完全平方多项式因式分解］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/936a8b2e747a409586ddfc9886675275~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=wi704eZdsnij6B%2BKCh3s7lr1og4%3D)
App15:57![初一数学精选题库[30]{难度9}［数列经过复杂运算后的特征］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/240e9a883fa94ebf950f511372124a8f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=KRT5QjkN8%2BnQNQe0EflXNEKVDFY%3D)
App20:26![初一数学精选题库[66]{难度9}［质数与因数判断］](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/dff069ff795f47f6a4cde5348c394dfa~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=2024110400134681EDA1D1EFCE08133A30&requestFrom=704&version_code=80402&x-expires=1762186426&x-signature=x6QmyOZrdLsLjsTFdpNwuw5D7Mc%3D)
App06:34打开App观看
