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Last updated on May 26th, 2025

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LCM of 60 and 75

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The smallest positive integer that divides the numbers with no numbers left behind is the LCM of 60 and 75. Did you know? We apply LCM unknowingly in everyday situations like setting alarms and to synchronize traffic lights and when making music. In this article, let’s now learn to find LCMs of 60 and 75.

LCM of 60 and 75 for Qatari Students
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What is LCM of 60 and 75

We can find the LCM using listing multiples method, prime factorization method and the long division method. These methods are explained here, apply a method that fits your understanding well. 
 

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LCM of 60 and 75 using listing multiples method

Step 1: List the multiples of each of the numbers; 


60 = 60,120,180,240,300,… 


75= 75,150,225,300,…


Step 2: Find the smallest number in both the lists 


LCM (60,75) = 300 
 

Professor Greenline from BrightChamps

LCM of 60 and 75 using prime factorization method

Step 1:Prime factorize the numbers

 
60 = 2×2×3×5


75 = 3×5×5 


Step 2:find highest powers


22,3 and 52 


Step 3: Multiply the highest powers of the numbers


22×3×52 = 300 


LCM(60,75) = 300 
 

Professor Greenline from BrightChamps

LCM of 60 and 75 using division method

  • Write the numbers in a row 

 

  • Divide them with a common prime factor

 

  • Carry forward numbers that are left undivided 

 

  • Continue dividing until the remainder is ‘1’ 

 

  • Multiply the divisors to find the LCM

 

  • LCM (60,75) = 300 
     
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Common mistakes and how to avoid them while finding the LCM of 60 and 75

Listed here are a few mistakes children may make when trying to find the LCM due to confusion or due to unclear understanding. Be mindful, understand, learn and avoid!
 

Mistake 1

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Duplicating or skipping a factor 
 

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A factor may be missed when we prime factorize a number. Writing the prime factorization of 75 may be written as 3×5×5×5 instead of 3×5×5 accidentally. 
 

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LCM of 60 and 75 Examples

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Problem 1

Verify that the relationship between GCD and LCM holds true for 60 and 75: LCM(a, b)×GCD(a, b)=a×b

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GCD(60, 75) = 15

 

LCM(60, 75) = 300

 

LCM (60,75)×GCD(60,75) = 300×15 = 4500

 

60×75 = 4500
 

Explanation

The formula holds because the product of the LCM and GCD equals the product of the original numbers.
 

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Problem 2

What percentage of the product of 60 and 75 is their LCM?

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Product of 60 and 75 =  60 × 75 = 4500


LCM = 300


Percentage = 300/4500×100 =  6.67%
 

Explanation

 The LCM is 6.67% of the product of the two numbers.

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Problem 3

If the LCM of 60 and a missing number xxx is 300, what is xxx?

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LCM(60,x) = 300


Prime factorization of 60 = 2² × 3 × 5


Since 300 = 2² × 3 × 5²,

 

the missing number x must provide the extra factor of 5.


Thus, x=75
 

Explanation

The missing number x is the number that would provide the required factors to make the LCM 300.

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Problem 4

Is 600 a common multiple of 60 and 75?

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600/60 = 10


600/75 = 8
 

Explanation

Since 600 is divisible by both 60 and 75, it is a common multiple. However, it is not the least common multiple, as the LCM is 300.
 

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FAQs on the LCM of 60 and 75

1. Find the GCF of 60 and 75 and list all the factors of the numbers.

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2.Find the LCM of 60,75 and 90.

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3.Find the LCM of 30,60 and 75?

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4.Find the LCM of 50,60 and 75?

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5. Find the LCM of 60,75 and 105?

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6.How can children in Qatar use numbers in everyday life to understand LCM of 60 and 75 ?

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7.What are some fun ways kids in Qatar can practice LCM of 60 and 75 with numbers?

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8.What role do numbers and LCM of 60 and 75 play in helping children in Qatar develop problem-solving skills?

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9.How can families in Qatar create number-rich environments to improve LCM of 60 and 75 skills?

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Professor Greenline from BrightChamps

Important glossaries for LCM of 60 and 75

  • Multiple: the result after multiplication of a number and an integer. To explain, 75×5 =375; 375 is a multiple of 75. 

 

  • Prime Factor: A number with only two factors, 1 and the number. For example,7, its factors are only 1 and 7 and the number when divided by any other integer will leave a remainder behind. 

 

  • Prime Factorization: breaking a number down into its prime factors. For example, 60 is written as the product of 2×2×3×5. 
     
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About BrightChamps in Qatar

At BrightChamps, numbers represent more than digits—they unlock countless opportunities! Our goal is to help children throughout Qatar master important math skills, focusing on the LCM of 60 and 75 with special attention on understanding the LCM—in a lively, fun, and easy way. Whether your child is calculating how fast a roller coaster moves at Qatar’s Angry Birds World, keeping score at local football matches, or managing their allowance to buy gadgets, mastering numbers builds confidence for daily challenges. Our interactive lessons make learning enjoyable and simple. Because children in Qatar learn in many different ways, we adapt our approach to suit each learner. From Doha’s modern cityscape to desert landscapes, BrightChamps makes math come alive. Let’s make the LCM a fun part of every child’s learning!
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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.

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Fun Fact

: She loves to read number jokes and games.

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