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