Addition: 27 + 54 = 81, or more easily would be 80 + 1 = 81, and so on.
Subtraction: 175 - 94 = 81, or more easily would be 82 - 1 = 81, and so on.
Multiplication: 3 x 27 = 81, or 9 x 9 = 81, and so on.
Division: 567 / 7 = 81, or 81 / 1 = 81, and so on.
“/“, is just another way to put the division sign by the way.
1 x 81 3 x 27 9 x 9
3 * 27
They are: 9 times 9 = 81
1 x 81, 3 x 27, 9 x 9.
1 x 729, 3 x 243, 9 x 81, 27 x 27
1 x 81 3 x 27 9 x 9
3 * 27
There are no two real numbers that will add to -9 and multiply to 81. Using complex numbers, the two numbers are: (-9/2 + i9/2√3) and (-9/2 - i9/2√3)
1 and 81 Those two numbers certainly divide into 81 though they are not the only numbers to do so.
They are: 9 times 9 = 81
2.4115 and 33.5885 (to 4 dp)
1 x 243, 3 x 81, 9 x 27
1 x 6561, 3 x 2187, 9 x 729, 27 x 243, 81 x 81.
79 and 2 if you add them.
1 x 81, 3 x 27, 9 x 9.
81 = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
1 x 81, 3 x 27, 9 x 9