# Readers ask: A Number Whose Square Root Is A Whole Number?

## What is the square root of all numbers?

You can also use this table to estimate the square roots of larger numbers. For instance, if you want to find the square root of 2000, look in the middle column until you find the number that is closest to 2000. Table of Squares and Square Roots.

NUMBER SQUARE SQUARE ROOT
7 49 2.646
8 64 2.828
9 81 3.000
10 100 3.162

## What is a square of a whole number?

Informally: When you multiply an integer (a “ whole ” number, positive, negative or zero) times itself, the resulting product is called a square number, or a perfect square or simply “a square.” So, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, and so on, are all square numbers.

## What is a rational number whose square root is a whole number called?

Integers such as 9 and 25, whose square roots are whole numbers, are called perfect squares.

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## Is square root of 121 a whole number?

As we have calculated further down on this page, the square root of 121 is a whole number. 121 is a perfect square.

## How do you calculate square root?

Example: Calculate the square root of 10 ( ) to 2 decimal places.

1. Find the two perfect square numbers it lies between. Solution: 32 = 9 and 42 = 16, so lies between 3 and 4.
2. Divide 10 by 3. 10/3 = 3.33 (you can round off your answer)
3. Average 3.33 and 3. ( 3.33 + 3)/2 = 3.1667.

## IS 400 a perfect square?

400 is a perfect square. Because 20 * 20 = 400.

## How do you identify a square number?

Total numbers of prime factors of a perfect square are always odd.

1. 4539 ends in 9, digit sum is 3.
2. 5776 ends in 6, digit sum is 7.
3. Step 1: A perfect square never ends in 2, 3, 7 or 8.
4. 15623.
5. Step 2: Obtain the digital root of the number:
6. 1 5 6 2 6 = 5 + 6 = 11 = 1 + 1 = 2.
7. Let us take up an example here.
8. 6 2 3 4 6 1.

## What is the square of 9?

“Is it possible to recreate this up to 12×12?”

0 Squared =
8 Squared = 64
9 Squared = 81
10 Squared = 100
11 Squared = 121

## What is 7 squared math?

7 2 = 7 • 7 = 49. You can read 7 2 as “ seven squared.” This is because multiplying a number by itself is called “ squaring a number.” Similarly, raising a number to a power of 3 is called “cubing the number.” You can read 7 3 as “ seven cubed.”

## Is 0 a rational number?

Yes, 0 is a rational number. Since we know, a rational number can be expressed as p/q, where p and q are integers and q is not equal to zero.

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## Can an integer be a square root?

An integer is either a perfect square or its square root is irrational. Said a different way, when you compute the square root of an integer, there are either no figures to the right of the decimal or there are an infinite number of figures to right of the decimal and they don’t repeat.

## What is the symbol used to indicate a positive square root?

A square root is written with a radical symbol √ and the number or expression inside the radical symbol, below denoted a, is called the radicand. To indicate that we want both the positive and the negative square root of a radicand we put the symbol ± (read as plus minus ) in front of the root.

## What are 2 square roots of 121?

2 Answers By Expert Tutors The square root off 121 is eleven.

## Is 121 a real number?

121 is a rational number because it can be expressed as the quotient of two integers: 121 ÷ 1.

## What type of number is 121?

121 ( one hundred [and] twenty-one) is the natural number following 120 and preceding 122. 121 (number)

← 120 121 122 →
Cardinal one hundred twenty -one
Ordinal 121st ( one hundred twenty -first)
Factorization 11 2
Divisors 1, 11, 121