BrightChamps Logo
Login
Creative Math Ideas Image
Live Math Learners Count Icon1443 Learners

Last updated on May 26th, 2025

Math Whiteboard Illustration

Square root of 144

Professor Greenline Explaining Math Concepts

The square root of 144 is the inverse operation of squaring a value “y” such that when “y” is multiplied by itself → y ⤫ y, the result is 144. It contains both positive and a negative root, where the positive root is called the principal square root.

Square root of 144 for UK Students
Professor Greenline from BrightChamps

What Is the Square Root of 144?

The square root of 144 is ±12.The positive value, 12 is the solution of the equation x2 = 144. As defined, the square root is just the inverse of squaring a number, so, squaring 12 will result in 144.  The square root of 144 is expressed as √144 in radical form, where the ‘√’  sign is called “radical”  sign. In exponential form, it is written as (144)1/2  
 

Professor Greenline from BrightChamps

Finding the Square Root of 144

We can find the square root of 144 through various methods. They are:

 

  • Prime factorization method

 

  • Long division method

 

  • Approximation/Estimation method
     
Professor Greenline from BrightChamps

Square Root of 144 By Prime Factorization Method

The prime factorization of 144 involves breaking down a number into its factors. Divide 144 by prime numbers, and continue to divide the quotients until they can’t be separated anymore. After factorizing 144, make pairs out of the factors to get the square root. If there exists numbers which cannot be made pairs further, we place those numbers with a “radical” sign along with the obtained pairs

 

So, Prime factorization of 144 = 2 × 2  × 2 × 2 × 3 × 3   

 


for 144, two pairs of factor 2 and one pair of factors 3 can be obtained.

 


So, it can be expressed as  √144 = √(2 × 2  × 2 × 2 × 3 × 3) = 2 × 2 × 3 = 12

 


12 is the simplest radical form of √144

 

Professor Greenline from BrightChamps

Square Root of 144 By Long Division Method

This is a method used for obtaining the square root for non-perfect squares, mainly. It usually involves the division of the dividend by the divisor, getting a quotient and a remainder too sometimes.

 

Follow the steps to calculate the square root of 144:


Step 1: Write the number 144 and draw a bar above the pair of digits from right to left.


Step 2: Now, find the greatest number whose square is less than or equal to 1. Here, it is1 because 12=1


Step 3: now divide 1 by 1 (the number we got from Step 2) such that we get 1 as a quotient, and we get a remainder.  Double the divisor 1, we get 2, and then the largest possible number A1=2 is chosen such that when 2 is written beside the new divisor 2, a 2-digit number is formed →22, and multiplying 2 with 22 gives 44, which is equal to 0 on subtracting from 44.


Repeat this process until you reach the remainder of 0. 

 

Step 4: The quotient obtained is the square root of 144. In this case, it is 12.

 

Professor Greenline from BrightChamps

Square Root of 144 By Subtraction Method

roots through the repeated subtraction method. Furthermore, we just have to subtract consecutive odd numbers from the given number, starting from 1. The square root of the given number will be the count of the number of steps required to obtain 0. Here are the steps:

 

Step 1: take the number 144 and then subtract the first odd number from it. Here, in this case, it is 144-1=143


Step 2: we have to subtract the next odd number from the obtained number until it comes zero as a result. Now take the obtained number (from Step 1), i.e., 143, and again subtract the next odd number after 1, which is 3, → 143-3=140. Like this, we have to proceed further.


Step 3: now we have to count the number of subtraction steps it takes to yield 0 finally. 


Here, in this case, it takes 12 steps 


So, the square root is equal to the count, i.e., the square root of 144 is ±12.

 

Max Pointing Out Common Math Mistakes

Common Mistakes and How to Avoid Them in the Square Root of 144

When we find the square root of 144, we often make some key mistakes, especially when we solve problems related to that. So, let’s see some common mistakes and their solutions.
 

Mistake 1

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

 Incorrectly applying the square root property 

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Square root do not distribute over additions. For example, √144 ≠  √44+√100

Max from BrightChamps Saying "Hey"

Square Root of 144 Examples

Ray, the Character from BrightChamps Explaining Math Concepts
Max, the Girl Character from BrightChamps

Problem 1

Find √(144⤬4) ?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

√(144⤬4)

 

= 12 ⤬2

 

= 24


Answer : 24
 

Explanation

 firstly, we found the values of the square roots of 144 and 4, then multiplied the values.

Max from BrightChamps Praising Clear Math Explanations
Max, the Girl Character from BrightChamps

Problem 2

What is √144 multiplied by 14 ?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

 √144 ⤬ 14

 

= 12⤬ 14

 

= 168


Answer:168 
 

Explanation

 finding the value of √144 and multiplying by 14.
 

Max from BrightChamps Praising Clear Math Explanations
Max, the Girl Character from BrightChamps

Problem 3

Find the radius of a circle whose area is 144π cm².

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

 Given, the area of the circle = 144π cm2


Now, area = πr2 (r is the radius of the circle)


So, πr2 = 144π cm2


We get, r2 = 144 cm2


r = √144 cm


Putting the value of √144 in the above equation, 


We get, r = ±12 cm


Here we will consider the positive value of 12.


Therefore, the radius of the circle is 12 cm.


Answer: 12 cm.
 

Explanation

 We know that, area of a circle = πr2 (r is the radius of the circle) According to this equation, we are getting the value of “r” as 12 cm by finding the value of the square root of 144
 

Max from BrightChamps Praising Clear Math Explanations
Max, the Girl Character from BrightChamps

Problem 4

Find the length of a side of a square whose area is 144 cm²

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

Given, the area = 144 cm2


We know that, (side of a square)2 = area of square


Or,  (side of a square)2 = 144


Or,  (side of a square)= √144


Or, the side of a square = ± 12.


But, the length of a square is a positive quantity only, so, the length of the side is 12 cm.


Answer: 12 cm
 

Explanation

We know that, (side of a square)2 = area of square. Here, we are given with the area of the square, so, we can easily find out its square root because its square root is the measure of the side of the square
 

Max from BrightChamps Praising Clear Math Explanations
Max, the Girl Character from BrightChamps

Problem 5

Find √144 / √36

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

 √144/√36

 

= √(144)/√(36)

 

=12/6  

 

= 2


Answer : 2 
 

Explanation

 we firstly found out the values of √144 and √36, then divided  .
 

Max from BrightChamps Praising Clear Math Explanations
Ray Thinking Deeply About Math Problems

FAQs on 144 Square Root

1.How many times does 9 go into 144?

Math FAQ Answers Dropdown Arrow

2.Can 144 be divided by 9?

Math FAQ Answers Dropdown Arrow

3.Is 144 a perfect square or non-perfect square?

Math FAQ Answers Dropdown Arrow

4.Is the square root of 144 a rational or irrational number?

Math FAQ Answers Dropdown Arrow

5.What are the factors of 144 ?

Math FAQ Answers Dropdown Arrow

6.How does learning Algebra help students in United Kingdom make better decisions in daily life?

Math FAQ Answers Dropdown Arrow

7.How can cultural or local activities in United Kingdom support learning Algebra topics such as Square root of 144?

Math FAQ Answers Dropdown Arrow

8.How do technology and digital tools in United Kingdom support learning Algebra and Square root of 144?

Math FAQ Answers Dropdown Arrow

9.Does learning Algebra support future career opportunities for students in United Kingdom?

Math FAQ Answers Dropdown Arrow
Professor Greenline from BrightChamps

Important Glossaries for Square Root of 144

  • Exponential form:  An algebraic expression that includes an exponent. It is a way of expressing the numbers raised to some power of their factors. It includes continuous multiplication involving base and exponent. Ex: 2 × 2 × 2 × 2 = 16 Or, 24 = 16, where 2 is the base, 4 is the exponent 

 

  • Prime Factorization:  Expressing the given expression as a product of its factors. Ex: 48=2 × 2 × 2 × 2 × 3

 

  • Prime Numbers: Numbers which are greater than 1, having only 2 factors as →1 and Itself. Ex: 1,3,5,7,....

 

  • Rational numbers and Irrational numbers: The Number which can be expressed as p/q, where p and q are integers and q not equal to 0 are called Rational numbers. Numbers which cannot be expressed as p/q, where p and q are integers and q not equal to 0 are called Irrational numbers. 

 

  • Perfect and non-perfect square numbers: Perfect square numbers are those numbers whose square roots do not include decimal places. Ex: 4,9,25 Non-perfect square numbers are those numbers whose square roots comprise decimal places. Ex :3, 8, 24
Professor Greenline from BrightChamps

About BrightChamps in United Kingdom

At BrightChamps, we believe algebra goes beyond symbols—it unlocks countless opportunities! Our mission is to help children throughout the United Kingdom develop essential math skills, focusing today on the Square root of 144 with an emphasis on understanding square roots—in a lively, enjoyable, and straightforward way. Whether your child is figuring out the speed of a roller coaster at Alton Towers, tallying scores at a local football match, or managing their pocket money for the newest gadgets, mastering algebra gives them the confidence for everyday challenges. Our interactive lessons keep learning simple and enjoyable. Because children in the UK learn differently, we adapt our approach to fit each child’s unique needs. From the bustling streets of London to the scenic Cornish coasts, BrightChamps makes math relatable and exciting throughout the UK. Let’s bring square roots into every child’s math journey!
Math Teacher Background Image
Math Teacher Image

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.

Math Teacher Fun Facts Image
Max, the Girl Character from BrightChamps

Fun Fact

: He loves to play the quiz with kids through algebra to make kids love it.

INDONESIA - Axa Tower 45th floor, JL prof. Dr Satrio Kav. 18, Kel. Karet Kuningan, Kec. Setiabudi, Kota Adm. Jakarta Selatan, Prov. DKI Jakarta
INDIA - H.No. 8-2-699/1, SyNo. 346, Rd No. 12, Banjara Hills, Hyderabad, Telangana - 500034
SINGAPORE - 60 Paya Lebar Road #05-16, Paya Lebar Square, Singapore (409051)
USA - 251, Little Falls Drive, Wilmington, Delaware 19808
VIETNAM (Office 1) - Hung Vuong Building, 670 Ba Thang Hai, ward 14, district 10, Ho Chi Minh City
VIETNAM (Office 2) - 143 Nguyễn Thị Thập, Khu đô thị Him Lam, Quận 7, Thành phố Hồ Chí Minh 700000, Vietnam
Dubai - BrightChamps, 8W building 5th Floor, DAFZ, Dubai, United Arab Emirates
UK - Ground floor, Redwood House, Brotherswood Court, Almondsbury Business Park, Bristol, BS32 4QW, United Kingdom