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