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