143 LearnersLast updated on May 26th, 2025
LCM of 4 and 4
Least Common Multiple (LCM) is the smallest positive integer that is divisible by both 4 and 4. By learning the following tricks, you can learn the LCM of 4 and 4 easily.
What Is the LCM of 4 and 4?
The LCM of 4 and 4 is 4. How did we get to this answer, though? That’s what we’re going to learn. We also see how we can find the LCM of 2 or more numbers in different ways
How to find the LCM of 4 and 4?
We have already read about how you can approach finding the LCM of 2 or more numbers. Here is a list of those methods which make it easy to find the LCMs:
Method 1: Listing of Multiples
Method 2: Prime Factorization
Method 3: Division Method
Now let us delve further into these three methods and how it benefits us.
LCM of 4 and 4 Using Listing of Multiples Method
In this method, we will list all the multiples of 4 and 4. Then we will try to find a multiple that is present in both numbers.
For example,
Multiples of 4:
4,8,12, 16,20,...
Multiples of 4:
4,8,12, 16,20,...
The LCM of 4 and 4 is 4. 4 is the smallest number which can be divisible by both 4 and 4.
LCM of 4 and 4 Using Prime Factorization
To find the LCM of 4 and 4 using the prime factorization method, we need to find out the prime factors of both the numbers. Then multiply the highest powers of the factors to get the LCM.
Prime Factors of 4 are: 22.
Therefore, the LCM of 4 and 4 is 4 itself.
LCM of 4 and 4 Using Division Method
To calculate the LCM using the division method. We will divide the given numbers with their prime numbers. The prime numbers should at least divide any one of the given numbers. Divide the numbers till the remainder becomes 1. By multiplying the prime factors, one can get LCM.
For finding the LCM of 4 and 4 we will use the following method.
By multiplying the prime divisors from the table, we will get the LCM of 4 and 4.
2 × 2 = 4
The LCM of 4 and 4 is 4.
Common Mistakes and How to Avoid Them in LCM of 4 and 4.
Mistakes are common when we are finding the LCM of numbers. By learning the following common mistakes, we can avoid the mistakes.
Mistake 1
Missing a prime factor
Children sometimes may forget to write all the prime factors for a given number. So, at the start we have to write all the prime factors for the given numbers which won’t cause any problems later on.
LCM of 4 and 4 Examples
Problem 1
The bus and train come in an interval of 4 minutes. If they come together at 1: 00 PM, at what time will they come together
The bus and train come together after 4 minutes. Therefore, after 1:00 PM, the train and bus will come together at 1:04 PM.
Explanation
To find when the bus and train come together, we find the LCM of 4 and 4.
Prime factorization of 4 = 22
Prime factorization of 4 = 22
LCM (4,4) = 22 = 4
Problem 2
Two workers, A and B, complete tasks every 4 hours each, starting at the same time. If both start working at 9 a.m., when will they finish their tasks together again?
Since both workers finish a task every 4 hours, we calculate the LCM of 4 and 4, which is 4.
This means every 4 hours, they will finish together.
Starting at 9 a.m., they will both complete a task at 1 p.m., 5 p.m., etc.
Explanation
The LCM of their working intervals gives the time at which both workers will finish their tasks simultaneously. Here, it shows they’ll complete tasks together every 4 hours.
Problem 3
If two numbers are both 4, is the LCM equal to the greater of the two numbers? Verify.
The LCM of 4 and 4 is 4.
Since both numbers are the same, the LCM of identical numbers is always the number itself.
Explanation
When two numbers are the same, their LCM is equal to that number. This verifies that for identical values, the LCM equals the number itself.
FAQs on the LCM of 4 and 4
1.What is the LCM of 2 and 4?
2.What is the LCM of 4 and 5?
3.What is the GCF of 4 and 2?
4.What is the LCM of 2 and 2?
5. Is 2 a prime number?
6.How can children in India use numbers in everyday life to understand LCM of 4 and 4?
7.What are some fun ways kids in India can practice LCM of 4 and 4 with numbers?
8.What role do numbers and LCM of 4 and 4 play in helping children in India develop problem-solving skills?
9.How can families in India create number-rich environments to improve LCM of 4 and 4 skills?
Important glossaries for the LCM of 4 and 4
- Prime Number: Any number that has only 2 factors is called a prime number.For example, 5 and 7, are prime numbers because they have only 2 factors in common - 1 and the number itself.
- Composite Number: Any number that has more than 2 factors is called a composite number. For example, 4,8, and 10.
- Prime Factorization: It is breaking down a number into smaller prime numbers, then multiplied together, giving the same number.
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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.
