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