1
Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [9, 7, 9, 7], Column headers: [3, 7, 8, 6] =
2
Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [2, 7, 4, 3], Column headers: [5, 10, 5, 9] =