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