The answer to 9 times 9 is 81.
To understand why, you can think of multiplication as repeated addition. When we say 9 times 9, we are adding 9 a total of 9 times:
9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 81
Another way to visualize this is by using a square with 9 rows and 9 columns. If you were to fill this square with units, you would see that the total amount of units would indeed be 81.
Thus, the multiplication operation confirms that 9 multiplied by 9 equals 81.