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