# Readers ask: What is the square root of 81?

## How do you find the square root of 81?

To find the square root of 81, or √ 81, we have two find one number, that when multiplying itself, equals to 81. That number is 9→ (9⋅9= 81 ) Therefore √ 81 =9.

## What is the square root of 81 simplified?

Explanation: 81 =9⋅9 then the square root of √ 81 =9.

## Is the square root of 81 a perfect square?

81 is a perfect square if the square root of 81 equals a whole number. As we have calculated further down on this page, the square root of 81 is a whole number.

## How do you find a square root?

How to find the square root of a number and calculate it by hand STEP 1: Separate The Digits Into Pairs. To begin, let’s organize the workspace. STEP 2: Find The Largest Integer. STEP 3: Now Subtract That Integer. STEP 4: Let’s Move To The Next Pair. STEP 5: Find The Right Match. STEP 6: Subtract Again.

## What are 2 square roots of 81?

Example Square Roots: The 2nd root of 81, or 81 radical 2, or the square root of 81 is written as 2√81=√81=±9. The 2nd root of 25, or 25 radical 2, or the square root of 25 is written as 2√25=√25=±5.

## What is the root square of 10?

Table of Squares and Square Roots

NUMBER SQUARE SQUARE ROOT
9 81 3.000
10 100 3.162
11 121 3.317
12 144 3.464

## How do you simplify square roots?

Simplifying a square root just means factoring out any perfect squares from the radicand, moving them to the left of the radical symbol, and leaving the other factor inside the radical symbol. If the number is a perfect square, then the radical sign will disappear once you write down its root.

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## IS 400 a perfect square?

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 400 is 20. Therefore, the square root of 400 is an integer, and as a consequence 400 is a perfect square.

## Is 24 a perfect square?

Perfect Square. A perfect square is a number, from a given number system, that can be expressed as the square of a number from the same number system. 25 is a perfect square. 24 is a natural number, but since there is no other natural number that can be squared to result in the number 24, 24 is NOT a perfect square.

## Is 75 a perfect square?

A: No, the number 75 is not a perfect square.

## What is a square root of 69?

So, we get the square root of √ 69 = 8.306 by the long division method.

## How do you solve square root problems?

Steps Square a number by multiplying it by itself. For square roots, find the “reverse” of a square. Know the difference between perfect and imperfect squares. Memorize the first 10-12 perfect squares. Simplify square roots by removing perfect squares when possible.

## How do you find the square root of 64?

Finding square root of perfect square numbers Now, if you do remember your perfect squared numbers, the root of 64 is just eight. Eight times eight gives you 64.

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