speed-grid/multiplication-4x4/easy · セット 1
2 problems
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1
4×4 addition speed grid. Row: [2, 10, 8, 3] × Col: [6, 7, 2, 1]
=
2
4×4 addition speed grid. Row: [7, 1, 3, 4] × Col: [10, 2, 6, 5]
=