81 ÷ 9 = 9
81 of them because 81/9 = 9
81 9*9=8181
9
8
81 has 5 factors: 1, 3, 9, 27, and 81.
9² = 9 × 9 = 81
There are 81 squares in a 9 by 9 square.
9
9 x 9 = 81 because if you count 9 times it would make up or be 81
81
-9 squared = 81(-9)^2 = (-9) * (-9) = 81