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