1
Speed Grid (-): Fill in each cell by applying the operation to the row and column headers. Row headers: [3, 6, 1, 5], Column headers: [4, 7, 4, 10] =
2
Speed Grid (×): Fill in each cell by applying the operation to the row and column headers. Row headers: [9, 7, 8, 7], Column headers: [6, 1, 9, 6] =