1
Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [9, 10, 5, 8], Column headers: [10, 2, 6, 4] =
2
Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [2, 1, 8, 8], Column headers: [8, 1, 8, 7] =