Q: What number multiplied by itself 4 times is 81?

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The number is three.

27 x 3 = 81

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.

Square numbers are the products of numbers that have been multiplied by themselves like 2 x 2 = 4, or 9 X 9 = 81. The squares here are 4 and 81.Numbers that can be made by multiplying another number my itself, like 12 x 12 = 144. So 144 is a square number.By convention and probably also by definition, square numbers and square roots (the numbers multiplied by themselves) are always whole numbers, integers with no factional or decimal parts.A square number is the result of any non-zero integer multiplied by itself.9 is a square number because 3 x 3 = 9.5 is not a square number because there isn't an integer that can be multiplied by itself to make 5.

7/9 x 2/9 = 14/81

Related questions

The number is three.

27 x 3 = 81

The number 9 !

The number that multiplied by 32 would equal 81 is 2.53125.

9 x 9

The number 9 !

In multiplication, 9 can be multiplied with any number. 9 times 9 is 81.

When a number is squared, it means that it is that number is multiplied by itself. So in this case it would be 9x9 which is equal to 81.

27 multiplied by 81 is 2,187.

You are asking for the square root. The square root of a number is a number multiplied by itself to get that number. For example, the square root of 81 is 9, because 9 X 9= 81. The square root of 1000 is not a whole number, it is 31.62 (rounded) because 31.62 x 31.62 = 1000.(31.62 is approximate. The actual number is 31.6227766)

A power, most likely, though it could be a superscript. A power, in its simplest form is the number of times the "main number" is to be multiplied to itself. For example, 34 = 3*3*3*3 = 81

18 multiplied by 81 is 1,458.