You have a few choices:
> 1 and 81
> 3 and 27
> 9 and 9
> 3 and 3 and 3
9 x 9 = 81 :(
81
81 times 70 equals 5,670. This can be calculated by multiplying 81 by 70, which results in 5,670. To do this, you would multiply the tens place of 81 (which is 8) by 70, resulting in 560, and then multiply the ones place of 81 (which is 1) by 70, resulting in 70, and finally add these two products together to get the final answer of 5,670.
These: 1 x 81, 3 x 27, 9 x 9
1 x 81, 3 x 27, 9 x 9.
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)
They are: 9 times 9 = 81
Factors are numbers you can multiply together to get another number. 81: 1, 3, 9, 27, 81
1 x 729, 3 x 243, 9 x 81, 27 x 27
9 x 9 = 81 :(
2.4115 and 33.5885 (to 4 dp)
3 & 27
81
162
They are: 2 times 81 = 162
81 times 70 equals 5,670. This can be calculated by multiplying 81 by 70, which results in 5,670. To do this, you would multiply the tens place of 81 (which is 8) by 70, resulting in 560, and then multiply the ones place of 81 (which is 1) by 70, resulting in 70, and finally add these two products together to get the final answer of 5,670.
There is only one number that's equal to 81. That number is 81. There are many other sets of two or more numbers that you can manipulate with an arithmetic operation and produce 81 as the result. For example: Addition: 27 + 54 = 81 Subtraction: 175 - 94 = 81 Multiplication: 3 x 27 = 81 Division: 567 / 7 = 81 But none of those other numbers is "equal" to 81.