130 LearnersLast updated on May 26th, 2025
Square Root of 1015
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 the field of vehicle design, finance, etc. Here, we will discuss the square root of 1015.
What is the Square Root of 1015?
A square root is the inverse of the square of a number. 1015 is not a perfect square. The square root of 1015 is expressed in both radical and exponential forms. In the radical form, it is expressed as √1015, whereas (1015)^(1/2) is its exponential form. √1015 ≈ 31.8591, 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 1015
The prime factorization method is used for perfect square numbers. However, the prime factorization method is not used for non-perfect square numbers where the long-division method and approximation method are employed. Let us now learn these methods:
- Prime factorization method
- Long division method
- Approximation method
Square Root of 1015 by Prime Factorization Method
The product of prime factors is the prime factorization of a number. Now let us examine how 1015 is broken down into its prime factors.
Step 1: Finding the prime factors of 1015 Breaking it down, we get 5 x 7 x 29.
Step 2: Now we found out the prime factors of 1015. The second step is to make pairs of those prime factors. Since 1015 is not a perfect square, the digits of the number can’t be grouped into pairs.
Therefore, calculating 1015 using prime factorization to find an exact square root is not possible.
Square Root of 1015 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 1015, we need to group it as 15 and 10.
Step 2: Now we need to find n whose square is closest to 10. We can say n as ‘3’ because 3 x 3 = 9 is lesser than or equal to 10. Now the quotient is 3, after subtracting 9 from 10 the remainder is 1.
Step 3: Now let us bring down 15 to make the new dividend 115. Add the old divisor with the same number, 3 + 3 = 6, which will be our new divisor.
Step 4: The new divisor will be the sum of the dividend and quotient. Now we get 6n as the new divisor, we need to find the value of n.
Step 5: The next step is finding 6n × n ≤ 115. Let us consider n as 1, now 61 x 1 = 61.
Step 6: Subtract 61 from 115, the difference is 54, and the quotient is 31.
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 5400.
Step 8: Now we need to find the new divisor that is 638 because 638 x 8 = 5104.
Step 9: Subtracting 5104 from 5400, we get the result 296.
Step 10: Now the quotient is 31.8.
Step 11: Continue doing these steps until we get two numbers after the decimal point. If there are no more decimal values, continue till the remainder is zero.
So the square root of √1015 ≈ 31.86.
Square Root of 1015 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 1015 using the approximation method.
Step 1: Now we have to find the closest perfect squares around √1015. The smallest perfect square less than 1015 is 961 (which is 31^2), and the largest perfect square more than 1015 is 1024 (which is 32^2). √1015 falls somewhere between 31 and 32.
Step 2: Now we need to apply the formula that is: (Given number - smallest perfect square) / (Greater perfect square - smallest perfect square). Using the formula: (1015 - 961) / (1024 - 961) = 54 / 63 ≈ 0.857. Using the formula, we identified the decimal point to add to our initial approximation. The next step is adding the value we got initially to the decimal number: 31 + 0.857 ≈ 31.857.
So the square root of 1015 is approximately 31.86.
Common Mistakes and How to Avoid Them in the Square Root of 1015
Students do make mistakes while finding the square root, like forgetting about the negative square root or skipping long division methods. Now let us look at a few of those mistakes that students tend to make in detail.
Mistake 1
Forgetting about the negative square root
It is important to make students aware that a number does have both positive and negative square roots. However, we will be taking only the positive square root, as it is the required one.
For example: √50 ≈ 7.07, 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 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 second step.
For Example: √(12 + 24) ≠ √12 + √24, which is incorrect. The correct way is √(12 + 24) = √36 = 6.
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 ≈ 7.071.
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 1015 Examples
Problem 1
Can you help Max find the area of a square box if its side length is given as √1015?
The area of the square is approximately 1032.7921 square units.
Explanation
The area of the square = side^2.
The side length is given as √1015.
Area of the square = side^2
= √1015 × √1015
≈ 31.8591 × 31.8591
≈ 1015.
Therefore, the area of the square box is approximately 1015 square units.
Problem 2
A square-shaped building measuring 1015 square feet is built; if each of the sides is √1015, what will be the square feet of half of the building?
507.5 square feet
Explanation
We can just divide the given area by 2, as the building is square-shaped.
Dividing 1015 by 2 = we get 507.5.
So half of the building measures 507.5 square feet.
Problem 3
Calculate √1015 × 5.
159.2955
Explanation
The first step is to find the square root of 1015, which is approximately 31.8591.
The second step is to multiply 31.8591 by 5.
So 31.8591 × 5 = 159.2955.
Problem 4
What will be the square root of (1015 + 9)?
The square root is ±32.
Explanation
To find the square root, we need to find the sum of (1015 + 9).
1015 + 9 = 1024, and then √1024 = 32.
Therefore, the square root of (1015 + 9) is ±32.
Problem 5
Find the perimeter of the rectangle if its length ‘l’ is √1015 units and the width ‘w’ is 38 units.
We find the perimeter of the rectangle as approximately 139.7182 units.
Explanation
Perimeter of the rectangle = 2 × (length + width).
Perimeter = 2 × (√1015 + 38)
= 2 × (31.8591 + 38)
≈ 2 × 69.8591
= 139.7182 units.
FAQ on Square Root of 1015
1.What is √1015 in its simplest form?
2.Mention the factors of 1015.
3.Calculate the square of 1015.
4.Is 1015 a prime number?
5.1015 is divisible by?
6.How does learning Algebra help students in Qatar make better decisions in daily life?
7.How can cultural or local activities in Qatar support learning Algebra topics such as Square Root of 1015?
8.How do technology and digital tools in Qatar support learning Algebra and Square Root of 1015?
9.Does learning Algebra support future career opportunities for students in Qatar?
Important Glossaries for the Square Root of 1015
- Square root: A square root is the inverse of a square. Example: 4^2 = 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 the reason it is also known as the principal square root.
- Factors: Factors of a number are whole numbers that divide it completely without leaving a remainder.
- Perfect square: A perfect square is an integer that is the square of an integer. For example, 16 is a perfect square because it is 4^2.
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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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