A group of object arranged in rows and columns of the same length - array, column - arranged from to to bottom, rows - arranged from left to right, 3 + 3 + 3 + 3 + 3 - repeated addition, 3 columns of 4, 3 rows of 4, Each column has five circles, Each row has three apples, A quick form of repeated addition - multiplication,

Arrays

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排行榜

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切換範本

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