speed-grid/multiplication-4x4-easy · Satz 1

2 problems
1
4×4 addition speed grid. Row: [9, 8, 6, 10] × Col: [8, 1, 4, 3] =
2
4×4 addition speed grid. Row: [7, 9, 8, 5] × Col: [5, 4, 10, 8] =
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