speed-grid/addition-5x5/expert · セット 10
2 problems
名前：
クラス:
日付：
1
4×4 addition speed grid. Row: [1, 9, 4, 5] × Col: [8, 1, 7, 4]
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2
4×4 addition speed grid. Row: [4, 1, 3, 5] × Col: [4, 5, 8, 6]
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