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