数学思维训练(第12期)

网友投稿 2018-08-05 10:57

强调一下：重在思维的训练，尽量不要有太多的功利心。

三年级

第1讲  速算与巧算

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第2讲 平均数

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第3讲  简单数列求和

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第4讲  植树问题

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第5讲  方阵问题

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