309 LearnersLast updated on May 26th, 2025
LCM of 6 and 10
The Least common multiple (LCM) is the smallest number that is divisible by the numbers 6 and 10. The LCM can be found using the listing multiples method, the prime factorization and/or division methods. LCM helps to solve problems with fractions and scenarios like scheduling or aligning repeating cycle of events.
What is the LCM of 6 and 10?​​​​​​
The LCM of 6 and 10 is the smallest positive integer, a multiple of both numbers. By finding the LCM, we can simplify the arithmetic operations with fractions to equate the denominators.
How to find the LCM of 6 and 10?
There are various methods to find the LCM, Listing method, prime factorization method and division method are explained below;
LCM of 6 and 10 using the Listing multiples method
To ascertain the LCM, list the multiples of the integers until a common multiple is found.
Steps:
1. Write down the multiples of each number:
Multiples of 6 = 6,12,18,24,30,…
Multiples of 10 = 10,20,30,40…
2. Ascertain the smallest multiple from the listed multiples
The least common multiple of the numbers is 30.
LCM of 6 and 10 using the Prime Factorization
The prime factors of each number are written, and then the highest power of the prime factors is multiplied to get the LCM.
Steps:
1. Find the prime factors of the numbers:
Prime factorization of 6 = 2×3
Prime factorization of 10= 2×5
2. Take the highest power of each prime factor and multiply the ascertained factors.
— 2,3,5 = LCM, i.e, 30
LCM of 6 and 10 using the Division Method
The Division Method involves simultaneously dividing the numbers by their prime factors and multiplying the divisors to get the LCM.
Steps:
1. Write down the numbers in a row;
2. Divide the row of numbers by a prime number that is evenly divisible into at least one of the given numbers.
3. Continue dividing the numbers until the last row of the results is ‘1’ and bring down the numbers not divisible by the previously chosen prime number.
4. The LCM of the numbers is the product of the prime numbers in the first column, i.e,
2×5×3 = 30
Common Mistakes and how to avoid them while finding the LCM of 6 and 10
Listed below are a few commonly made mistakes while attempting to ascertain the LCM of 6 and 10, make a note while practicing.
Mistake 1
Listing incorrect/overlooking multiples for the given numbers 6 and 10
This can be avoided by always double-checking the multiples of the numbers 6 and 10 and by not stopping too early. To elaborate, listing 6,12 as multiples of 6 and 10,20,30 as multiples of 10 and assuming 12 is the LCM.
LCM of 6 and 10 Examples
Problem 1
Ram goes to the office every 6 days, and his boss comes every 10 days. After how many days will they meet on the same day again?
The LCM of 6 and 10 is 30.
Explanation
Ram and his boss will meet again on the same day in 30 days. 30 is the LCM of the given numbers, expressing the smallest time interval.
Problem 2
Machine X stops for maintenance every 6 hours, while machine Y stops every 10 hours. In how long will the machines stop again?
The LCM of 6 and 10 is 30.
Explanation
The machines will stop every 30 hours. 30 is the LCM of the given numbers, expressing the smallest time interval.
Problem 3
A store receives shipments of apples every 6 days and bananas every 10 days. If both shipments arrive today, in how many days will both shipments arrive again on the same day?
The LCM of 6 and 10 is 30.
Explanation
Both the shipments will arrive together again in 30 days. 30 is the LCM of the given numbers, expressing the smallest time interval.
Problem 4
Emma and Jack, have classroom clean-up duties. Emma is assigned to cleaning duties every 6 days and Jack every 10 days. If both are assigned clean-up today, when will they next be assigned on the same day?
The LCM of 6 and 10 is 30.
Explanation
Emma and Jack will be assigned to clean up in 30 days. 30 is the LCM of the given numbers, expressing the smallest time interval.
FAQ’s on LCM of 6 and 10
1.What is the relationship between the Greatest Common Divisor (GCD) and LCM of 6 and 10?
2.How does one know when to use LCM instead of HCF? Explain using the digits 6 and 10.
3.What is the LCM of 6 and 10. Find it using the HCF?
4.How do you derive the LCM of two decimal numbers? Explain using 6.0 and 10.0?
5.How can children in Saudi Arabia use numbers in everyday life to understand LCM of 6 and 10 ?
6.What are some fun ways kids in Saudi Arabia can practice LCM of 6 and 10 with numbers?
7.What role do numbers and LCM of 6 and 10 play in helping children in Saudi Arabia develop problem-solving skills?
8.How can families in Saudi Arabia create number-rich environments to improve LCM of 6 and 10 skills?
Important glossaries for LCM of 6 and 10
- Multiple: A product of a number and any integer.
- Prime Factor: A prime factor is a natural number, other than 1, whose only factors are 1 and itself.
- Prime Factorization: The process of breaking down a number into its prime factors.
- Co-prime numbers: A number is co-prime when the only positive integer that is a divisor of them both is 1.
- Greatest Common Divisor (GCD): The largest positive integer that divides each of two or more integers without leaving a remainder.
- Relatively Prime Numbers: Two numbers that have no common factors other than 1.
- Fraction: A number representing a part of a whole.
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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.
Fun Fact
: She loves to read number jokes and games.
