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