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LCM
Two Numbers Three Numbers Multiple Numbers Prime Factorization Division Listing Multiples Ladder Exponents Venn Diagram Factor Tree
HCF
Two Numbers Three Numbers Multiple Numbers Prime Factorization Listing Ladder Exponents Venn Diagram Division Factor Tree All Factors By Division All Factors By Multiplication

LCM Of Two Numbers By Listing Multiples

Two Numbers Three Numbers Multiple Numbers
Method
Listing Multiples Prime Factorization Division Ladder Exponents Venn Diagram
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Answer: LCM of 30, 75 is 150

Step B: Find the LCM Using Listing Multiples

LCM Method
Calculate LCM
Multiples of 30:
30
60
90
120
150
180
210
Multiples of 75:
75
150
225
300

Listing Multiples Help

1. List multiples of each number.
2. Identify common multiples.
3. Choose smallest multiple as LCM.

What is Listing Multiples?

The listing multiples method involves finding multiples of each number and identifying common multiples. The smallest common multiple is the LCM of the given numbers.

Solved Examples

Examples

Example 1: Find the LCM of 2 and 5.
Solution:
LCM of 2 and 5: Multiples of 2 = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ...
Multiples of 5 = 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ...
Smallest common multiple = 10.
Therefore, LCM(2, 5) = 10. Example 2: Find the LCM of 4 and 5.
Solution:
LCM of 4 and 5: Multiples of 4 = 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, ...
Multiples of 5 = 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ...
Smallest common multiple = 20.
Therefore, LCM(4, 5) = 20. Example 3: Find the LCM of 12 and 16.
Solution:
LCM of 12 and 16: Multiples of 12 = 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, ...
Multiples of 16 = 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, ...
Smallest common multiple = 48.
Therefore, LCM(12, 16) = 48.

Exercise

1. LCM(10,15) = 30
 2. LCM(16,24) = 48
 3. LCM(21,28) = 84
 4. LCM(24,36) = 72
 5. LCM(6,8) = 24
 6. LCM(8,10) = 40
 7. LCM(9,12) = 36
 8. LCM(18,24) = 72
 9. LCM(13,17) = 221
 10. LCM(30,40) = 120

Least Common Multiple (LCM)

What is LCM?

LCM or Least Common Multiple, is the smallest number that is divisible by each of the given numbers without leaving a remainder.
The LCM formula can be expressed as,
LCM Formula:
LCM = (a × b)/ HCF(a,b)
where, a and b = Two terms
HCF(a, b) = Highest common factor of a and b.

How to find LCM?

The Least Common Multiple or LCM can be found using various methods, such as: Prime Factorization MethodDivision MethodListing Multiples MethodLadder MethodExponents MethodVenn Diagram Method

FAQ

What are the steps involved to find LCM?
1. Input two numbers into the calculator.
2. List the multiples of each number.
3. Identify the smallest common multiple as the LCM.
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