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153 LearnersLast updated on November 30th, 2024
LCM of 12 and 30
LCM helps to solve problems with fractions and scenarios like scheduling or aligning repeating cycle of events. The Least common multiple (LCM) is the smallest number that is divisible by the numbers 12 and 30.
What is the LCM of 12 and 30?
The LCM of 12 and 30 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 12 and 30 ?
There are various methods to find the LCM, Listing method, prime factorization method and division method are explained below;
LCM of 12 and 30 using the Listing multiples method
The LCM of 12 and 30 can be found using the following steps;
Step 1: Write down the multiples of each number:
Multiples of 12 = 12,24,36,48,60…
Multiples of 30 = 30,60,…
Step 2: Ascertain the smallest multiple from the listed multiples of 12 and 30. The least common multiple of the numbers 12 and 30 is 60.
LCM of 12 and 30 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.
Step 1: Find the prime factors of the numbers:
Prime factorization of 12 = 2×2×3
Prime factorization of 30 = 2×5×3
Step 2: Multiply the highest power of each factor ascertained to get the LCM:
LCM (12,30) = 60
LCM of 12 and 30 using the Division Method
The Division Method involves simultaneously dividing the numbers by their prime factors and multiplying the divisors to get the LCM.
Step 1: Write down the numbers in a row;
Step 2:A prime integer that is evenly divisible into at least one of the provided numbers should be used to divide the row of numbers.
Step 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.
Step 4:The LCM of the numbers is the product of the prime numbers in the first column, i.e,
LCM (12,30) = 60
Common Mistakes and how to avoid them while finding the LCM of 12 and 30
LCM of 12 and 30, Examples
Problem 1
The LCM of a and b is 36 and the sum of a and b is 21. Find a and b.
Explanation
Problem 2
The LCM of 9 and ‘b’ is 36. Ascertain b.
Explanation
Problem 3
Two vans arrive at a store every 12 and 30 minutes, respectively, for a delivery. If they both arrive at the station at 8:00 AM, when will they arrive together again?
Explanation
FAQ’s on LCM of 12 and 30
1.Is 6 a factor of 0?
2.What is the HCF of 12 and 30?
3.What is the LCM of 10,12 and 30?
4.What is the LCM of 12 and 32?
5.What is the LCM of 12,24 and 30?
Important glossaries for LCM of 12 and 30
- Multiple: A number and any integer multiplied.
- Prime Factor: A natural number (other than 1) that has factors that are one and itself.
- Prime Factorization: The process of breaking down a number into its prime factors is called Prime Factorization.
- Co-prime numbers: When the only positive integer that is a divisor of them both is 1, a number is co-prime.
- Prime Numbers: Numbers that have no common factors other than 1.
- Fraction: A representation of 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.
