1
Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [8, 10, 1, 5], Column headers: [7, 3, 10, 9] =
2
Speed Grid (+): Fill in each cell by applying the operation to the row and column headers. Row headers: [7, 5, 1, 1], Column headers: [4, 9, 2, 7] =