Miltiplying by nine then by one.
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no it can go to 1 over 9
The square root of 81 is: ±9 (9 or -9)A square root is a number which, when multiplied by itself, equals the original number. As 9 x 9 = 81 and -9 x -9 = 81, the answer is plus or minus nine.
The factors of 81 are numbers that can be multiplied together to give 81. The factors of 81 are 1, 3, 9, 27, and 81. Prime factors are the factors that are prime numbers. The prime factors of 81 are 3 and 3, or written as 3^4.
0.1111
81/9 = 9