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