speed-grid/addition-5x5/expert · Sæt 5
2 problems
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1
4×4 addition speed grid. Row: [3, 2, 7, 6] × Col: [5, 7, 6, 9]
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2
4×4 addition speed grid. Row: [8, 3, 2, 9] × Col: [6, 3, 1, 9]
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