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