speed-grid/addition-5x5/easy · セット 10
2 problems
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クラス:
日付：
1
4×4 addition speed grid. Row: [10, 9, 2, 3] × Col: [2, 1, 9, 8]
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2
4×4 addition speed grid. Row: [4, 1, 9, 8] × Col: [3, 4, 6, 1]
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