Speed Grid Multiplication 4x4 Hard · Set 1
2 problems
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1
4×4 addition speed grid. Row: [10, 1, 5, 8] × Col: [10, 8, 4, 5]
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2
4×4 addition speed grid. Row: [7, 9, 4, 8] × Col: [5, 7, 4, 1]
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