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                "question": "Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [10, 5, 1], Column headers: [4, 7, 8]",
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                "question": "Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 7, 3], Column headers: [3, 1, 10]",
                "answer": "Row 6: [9, 7, 16]; Row 7: [10, 8, 17]; Row 3: [6, 4, 13]",
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                "question": "Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 8, 10], Column headers: [8, 4, 5]",
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                "difficulty": "medium",
                "question": "Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 2, 2], Column headers: [3, 5, 9]",
                "answer": "Row 8: [5, 3, 1]; Row 2: [1, 3, 7]; Row 2: [1, 3, 7]",
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