BrightChamps Logo
Login
Creative Math Ideas Image
Live Math Learners Count Icon100 Learners

Last updated on August 5th, 2025

Math Whiteboard Illustration

GCF of 180 and 54

Professor Greenline Explaining Math Concepts

The GCF is the largest number that can divide two or more numbers without leaving any remainder. GCF is used to share items equally, to group or arrange items, and to schedule events. In this topic, we will learn about the GCF of 180 and 54.

GCF of 180 and 54 for Indian Students
Professor Greenline from BrightChamps

What is the GCF of 180 and 54?

The greatest common factor of 180 and 54 is 18. The largest divisor of two or more numbers is called the GCF of the number. If two numbers are co-prime, they have no common factors other than 1, so their GCF is 1. The GCF of two numbers cannot be negative because divisors are always positive.

Professor Greenline from BrightChamps

How to find the GCF of 180 and 54?

To find the GCF of 180 and 54, a few methods are described below -

 

  • Listing Factors
  • Prime Factorization
  • Long Division Method / by Euclidean Algorithm
Professor Greenline from BrightChamps

GCF of 180 and 54 by Using Listing of Factors

Steps to find the GCF of 180 and 54 using the listing of factors

 

Step 1: Firstly, list the factors of each number

Factors of 180 = 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180.

Factors of 54 = 1, 2, 3, 6, 9, 18, 27, 54.

 

Step 2: Now, identify the common factors of them Common factors of 180 and 54: 1, 2, 3, 6, 9, 18.

 

Step 3: Choose the largest factor

The largest factor that both numbers have is 18.

The GCF of 180 and 54 is 18.

Professor Greenline from BrightChamps

GCF of 180 and 54 Using Prime Factorization

To find the GCF of 180 and 54 using the Prime Factorization Method, follow these steps:

 

Step 1: Find the prime factors of each number

Prime Factors of 180: 180 = 2 x 2 x 3 x 3 x 5 = 2² x 3² x 5

Prime Factors of 54: 54 = 2 x 3 x 3 x 3 = 2 x 3³

 

Step 2: Now, identify the common prime factors

The common prime factors are: 2 x 3 x 3 = 2 x 3²

 

Step 3: Multiply the common prime factors 2 x 3² = 2 x 9 = 18.

The Greatest Common Factor of 180 and 54 is 18.

Professor Greenline from BrightChamps

GCF of 180 and 54 Using Division Method or Euclidean Algorithm Method

Find the GCF of 180 and 54 using the division method or Euclidean Algorithm Method. Follow these steps:

 

Step 1: First, divide the larger number by the smaller number

Here, divide 180 by 54 180 ÷ 54 = 3 (quotient),

The remainder is calculated as 180 − (54 x 3) = 18

The remainder is 18, not zero, so continue the process

 

Step 2: Now divide the previous divisor (54) by the previous remainder (18)

Divide 54 by 18 54 ÷ 18 = 3 (quotient), remainder = 54 − (18 x 3) = 0

The remainder is zero, the divisor will become the GCF.

The GCF of 180 and 54 is 18.

Max Pointing Out Common Math Mistakes

Common Mistakes and How to Avoid Them in GCF of 180 and 54

Finding the GCF of 180 and 54 looks simple, but students often make mistakes while calculating the GCF. Here are some common mistakes to be avoided by the students.

Mistake 1

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Listing Incorrect Factors

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Students may sometimes list incorrect factors.

 

For example, while listing factors of 180, students may mention 50, which is incorrect. To avoid this, students should carefully divide the number and list the factors correctly.

Mistake 2

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Choosing the Wrong Common Factor

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Students may sometimes select the smallest common factor instead of the largest one. To avoid this confusion, students should list all the common factors and find the greatest one.

Mistake 3

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Forgetting to Include 1 as a Factor

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Sometimes students may forget 1 as a common factor of the numbers. However, it does not affect the GCF, but it indicates an incomplete understanding of the factors. Students should include 1 as a factor.

Mistake 4

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Using Multiples Instead of Factors

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Students confuse factors with multiples. In that confusion, sometimes they may write multiples instead of factors. To avoid this confusion, students should know the definitions of multiples and factors clearly.

Mistake 5

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

Assuming GCF is Always an Even Number

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

Students may assume that the GCF of two numbers will always be an even number. But it's not true; a GCF can also be an odd number. To avoid this, students should focus on common factors rather than focusing on even and odd numbers.

arrow-right
Max from BrightChamps Saying "Hey"
Hey!

Greatest Common Factor of 180 and 54 Examples

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

Problem 1

A chef has 180 apples and 54 oranges. He wants to pack them into the largest possible equal groups. How many fruits will be in each group?

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

We should find the GCF of 180 and 54

GCF of 180 and 54 2 x 3² = 2 x 9 = 18.

There are 18 equal groups 180 ÷ 18 = 10

54 ÷ 18 = 3

There will be 18 groups, and each group gets 10 apples and 3 oranges.

Explanation

As the GCF of 180 and 54 is 18, the chef can make 18 groups. Now divide 180 and 54 by 18. Each group gets 10 apples and 3 oranges.

Max from BrightChamps Praising Clear Math Explanations
Well explained 👍
Max, the Girl Character from BrightChamps

Problem 2

A company has 180 red chairs and 54 blue chairs. They want to arrange them in rows with the same number of chairs in each row, using the largest possible number of chairs per row. How many chairs will be in each row?

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

GCF of 180 and 54 2 x 3² = 2 x 9 = 18.

So each row will have 18 chairs.

Explanation

There are 180 red and 54 blue chairs. To find the total number of chairs in each row, we should find the GCF of 180 and 54. There will be 18 chairs in each row.

Max from BrightChamps Praising Clear Math Explanations
Well explained 👍
Max, the Girl Character from BrightChamps

Problem 3

A tailor has 180 meters of red fabric and 54 meters of blue fabric. She wants to cut both fabrics into pieces of equal length, using the longest possible length. What should be the length of each piece?

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

For calculating the longest equal length, we have to calculate the GCF of 180 and 54

The GCF of 180 and 54 2 x 3² = 2 x 9 = 18.

The fabric is 18 meters long.

Explanation

For calculating the longest length of the fabric first, we need to calculate the GCF of 180 and 54, which is 18. The length of each piece of fabric will be 18 meters.

Max from BrightChamps Praising Clear Math Explanations
Well explained 👍
Max, the Girl Character from BrightChamps

Problem 4

A carpenter has two wooden planks, one 180 cm long and the other 54 cm long. He wants to cut them into the longest possible equal pieces, without any wood left over. What should be the length of each piece?

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

The carpenter needs the longest piece of wood GCF of 180 and 54 2 x 3² = 2 x 9 = 18.

The longest length of each piece is 18 cm.

Explanation

To find the longest length of each piece of the two wooden planks, 180 cm and 54 cm, respectively. We have to find the GCF of 180 and 54, which is 18 cm. The longest length of each piece is 18 cm.

Max from BrightChamps Praising Clear Math Explanations
Well explained 👍
Max, the Girl Character from BrightChamps

Problem 5

If the GCF of 180 and ‘b’ is 18, and the LCM is 540. Find ‘b’.

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

The value of ‘b’ is 54.

Explanation

GCF x LCM = product of the numbers 18 x 540 = 180 x b

9720 = 180b

b = 9720 ÷ 180 = 54

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

FAQs on the Greatest Common Factor of 180 and 54

1.What is the LCM of 180 and 54?

The LCM of 180 and 54 is 540.

Math FAQ Answers Dropdown Arrow

2.Is 180 divisible by 5?

Yes, 180 is divisible by 5 because its last digit is 0, which is divisible by 5.

Math FAQ Answers Dropdown Arrow

3.What will be the GCF of any two prime numbers?

The common factor of prime numbers is 1 and the number itself. Since 1 is the only common factor of any two prime numbers, it is said to be the GCF of any two prime numbers.

Math FAQ Answers Dropdown Arrow

4.What is the prime factorization of 54?

The prime factorization of 54 is 2 x 3³.

Math FAQ Answers Dropdown Arrow

5.Are 180 and 54 prime numbers?

No, 180 and 54 are not prime numbers because both of them have more than two factors.

Math FAQ Answers Dropdown Arrow

6.How can children in India use numbers in everyday life to understand GCF of 180 and 54?

Numbers appear everywhere—from counting money to measuring ingredients. Kids in India see how GCF of 180 and 54 helps solve real problems, making numbers meaningful beyond the classroom.

Math FAQ Answers Dropdown Arrow

7.What are some fun ways kids in India can practice GCF of 180 and 54 with numbers?

Games like board games, sports scoring, or even cooking help children in India use numbers naturally. These activities make practicing GCF of 180 and 54 enjoyable and connected to their world.

Math FAQ Answers Dropdown Arrow

8.What role do numbers and GCF of 180 and 54 play in helping children in India develop problem-solving skills?

Working with numbers through GCF of 180 and 54 sharpens reasoning and critical thinking, preparing kids in India for challenges inside and outside the classroom.

Math FAQ Answers Dropdown Arrow

9.How can families in India create number-rich environments to improve GCF of 180 and 54 skills?

Families can include counting chores, measuring recipes, or budgeting allowances, helping children connect numbers and GCF of 180 and 54 with everyday activities.

Math FAQ Answers Dropdown Arrow
Professor Greenline from BrightChamps

Important Glossary for GCF of 180 and 54

  • Factors: Factors are numbers that divide the target number completely. For example, the factors of 18 are 1, 2, 3, 6, 9, and 18.

     
  • Multiple: Multiples are the products we get by multiplying a given number by another. For example, the multiples of 3 are 3, 6, 9, 12, and so on.

     
  • Prime Factors: These are the factors of a number that are prime numbers and divide the given number completely. For example, the prime factors of 180 are 2, 3, and 5.

     
  • Remainder: The value left after division when the number cannot be divided evenly. For example, when 19 is divided by 5, the remainder is 4, and the quotient is 3.

     
  • LCM: The smallest common multiple of two or more numbers is termed LCM. For example, the LCM of 180 and 54 is 540.
Math Teacher Background Image
Math Teacher Image

Hiralee Lalitkumar Makwana

About the Author

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.

Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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
UAE - 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