135 LearnersLast updated on May 26th, 2025
Square Root of 626
If a number is multiplied by the same number, the result is a square. The inverse of the square is a square root. The square root is used in fields such as vehicle design, finance, etc. Here, we will discuss the square root of 626.
What is the Square Root of 626?
The square root is the inverse of the square of the number. 626 is not a perfect square. The square root of 626 is expressed in both radical and exponential form. In the radical form, it is expressed as √626, whereas (626)^(1/2) in the exponential form. √626 ≈ 25.01999, which is an irrational number because it cannot be expressed in the form of p/q, where p and q are integers and q ≠ 0.
Finding the Square Root of 626
The prime factorization method is used for perfect square numbers. However, the prime factorization method is not applicable for non-perfect square numbers where long-division method and approximation methods are used. Let us now learn the following methods:
- Prime factorization method
- Long division method
- Approximation method
Square Root of 626 by Prime Factorization Method
The product of prime factors is the Prime factorization of a number. Now let us look at how 626 is broken down into its prime factors.
Step 1: Finding the prime factors of 626 Breaking it down, we get 2 x 313: 2^1 x 313^1
Step 2: Now we have found the prime factors of 626. Since 626 is not a perfect square, the digits of the number can’t be grouped into pairs. Therefore, calculating 626 using prime factorization is not feasible.
Square Root of 626 by Long Division Method
The long division method is particularly used for non-perfect square numbers. In this method, we should check the closest perfect square number for the given number. Let us now learn how to find the square root using the long division method, step by step.
Step 1: To begin with, we need to group the numbers from right to left. In the case of 626, we need to group it as 26 and 6.
Step 2: Now, we need to find n whose square is ≤ 6. We can take n as ‘2’ because 2 x 2 = 4, which is less than or equal to 6. Now the quotient is 2. After subtracting 4 from 6, the remainder is 2.
Step 3: Now let us bring down 26, which is the new dividend. Add the old divisor with the same number 2 + 2, we get 4, which will be our new divisor.
Step 4: The new divisor will be the sum of the dividend and quotient. Now we get 4n as the new divisor, and we need to find the value of n.
Step 5: The next step is finding 4n x n ≤ 226. Let us consider n as 5; now 4 x 5 x 5 = 225.
Step 6: Subtract 225 from 226; the difference is 1, and the quotient is 25.
Step 7: Since the dividend is less than the divisor, we need to add a decimal point. Adding the decimal point allows us to add two zeroes to the dividend. Now the new dividend is 100.
Step 8: Now we need to find a new divisor that is 250, because 250 x 0 = 0.
Step 9: Subtracting 0 from 100, we get the result 100. Step 10: The next digit in the quotient is 0.
Step 11: Continue doing these steps until we get two numbers after the decimal point. Suppose if there is no decimal value, continue till the remainder is zero. So the square root of √626 ≈ 25.02
Square Root of 626 by Approximation Method
The approximation method is another method for finding square roots. It is an easy method to find the square root of a given number. Now let us learn how to find the square root of 626 using the approximation method.
Step 1: Now we have to find the closest perfect squares of √626. The smallest perfect square less than 626 is 625, and the largest perfect square greater than 626 is 676. √626 falls somewhere between 25 and 26.
Step 2: Now we need to apply the formula: (Given number - smallest perfect square) / (Greater perfect square - smallest perfect square). Going by the formula: (626 - 625) / (676 - 625) = 1 / 51 ≈ 0.0196 Using the formula, we identified the decimal part of our square root. The next step is adding the value we got initially to the decimal number, which is 25 + 0.0196 ≈ 25.02. So the square root of 626 is approximately 25.02.
Common Mistakes and How to Avoid Them in the Square Root of 626
Students make mistakes while finding the square root, such as forgetting about the negative square root or skipping long division methods. Now let us look at a few of these mistakes in detail.
Mistake 1
Forgetting about the negative square root
It is important to make students aware that a number has both positive and negative square roots. However, we usually consider only the positive square root, as it is the required one.
For example: √50 ≈ 7.07, and there is also -7.07, which should not be forgotten.
Mistake 2
Not adding the square root symbol in proper places
Not using the square root symbol properly is another mistake that children make. To resolve this, we need to teach children that simplifying the numbers inside the square root is important, and then move on to the next step.
For example: √(12+24) ≠ √12 + √24; this is a wrong method of using roots. The correct way of using roots is √(12+24) = √36.
Mistake 3
Not finding the correct value of a non-perfect square
The first step that needs to be taught to children is to simplify the numbers inside the square root. This is important so that students do not make mistakes while identifying the approximate value.
For example: √50 ≈ 7 is wrong; the correct answer is √50 ≈ 7.071067.
Mistake 4
Confusing the square root symbol with the cube root
Students need to be taught the difference between cube root and square root constantly, as this will help them avoid mistakes.
For example: √50 and ∛50 are different.
Mistake 5
Making mistakes in long division
Finding a square root using the Long Division method involves many steps. Due to this, many students might skip a step accidentally, which results in a wrong answer at the end of the sum. This may either happen in subtracting or elsewhere.
Square Root of 626 Examples
Problem 1
Can you help Max find the area of a square box if its side length is given as √626?
The area of the square is approximately 391.21 square units.
Explanation
The area of the square = side².
The side length is given as √626.
Area of the square = side² = √626 x √626 = 25.02 x 25.02 ≈ 391.21
Therefore, the area of the square box is approximately 391.21 square units.
Problem 2
A square-shaped building measuring 626 square feet is built; if each of the sides is √626, what will be the square feet of half of the building?
313 square feet
Explanation
We can just divide the given area by 2 as the building is square-shaped.
Dividing 626 by 2, we get 313.
So half of the building measures 313 square feet.
Problem 3
Calculate √626 x 5.
125.1
Explanation
The first step is to find the square root of 626, which is approximately 25.02.
The second step is to multiply 25.02 by 5.
So 25.02 x 5 ≈ 125.1
Problem 4
What will be the square root of (626 + 0)?
The square root is approximately 25.02.
Explanation
To find the square root, we need to find the sum of (626 + 0). 626 + 0 = 626, and then √626 ≈ 25.02.
Therefore, the square root of (626 + 0) is approximately ±25.02.
Problem 5
Find the perimeter of the rectangle if its length ‘l’ is √626 units and the width ‘w’ is 38 units.
We find the perimeter of the rectangle as approximately 126.04 units.
Explanation
Perimeter of the rectangle = 2 × (length + width).
Perimeter = 2 × (√626 + 38) = 2 × (25.02 + 38) = 2 × 63.02 ≈ 126.04 units.
FAQ on Square Root of 626
1.What is √626 in its simplest form?
2.Mention the factors of 626.
3.Calculate the square of 626.
4.Is 626 a prime number?
5.626 is divisible by?
6.How does learning Algebra help students in Australia make better decisions in daily life?
7.How can cultural or local activities in Australia support learning Algebra topics such as Square Root of 626?
8.How do technology and digital tools in Australia support learning Algebra and Square Root of 626?
9.Does learning Algebra support future career opportunities for students in Australia?
Important Glossaries for the Square Root of 626
- Square root: A square root is the inverse of a square. Example: 4² = 16, and the inverse of the square is the square root, that is √16 = 4.
- Irrational number: An irrational number is a number that cannot be written in the form of p/q, where q is not equal to zero and p and q are integers.
- Principal square root: A number has both positive and negative square roots; however, it is always the positive square root that has more prominence due to its uses in the real world. That is why it is also known as the principal square root.
- Prime factorization: Expressing a number as the product of its prime factors. For example, the prime factorization of 18 is 2 x 3 x 3.
- Decimal: If a number has a whole number and a fraction in a single number, then it is called a decimal. For example: 7.86, 8.65, and 9.42 are decimals.
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Jaskaran Singh Saluja
About the Author
Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.
Fun Fact
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