1
Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [6, 3, 7, 8], Column headers: [9, 1, 2, 6] =
2
Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 1, 10, 3], Column headers: [10, 10, 10, 3] =