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Last updated on November 29th, 2024

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LCM of 9 and 11

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Foundation
Intermediate
Advance Topics

The smallest number that should also be a positive number, and evenly divide both the numbers, is known as the least common factor. LCM is very important for solving problems, especially fractions, scheduling events etc.

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What is the LCM of 9 and 11

The LCM of 9 and 11 is the lowest number that divides both 9 and 11 without leaving any remainder. The LCM of 9 and 11 is 99.
 

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How to find the LCM of 9 and 11?

The LCM of 9 and 11 can be found by the following methods like division method, listing multiples, prime factorization.
 

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LCM of 9 and 11 using Division method:

In the division method, we divide both the numbers by the lowest possible number until we get 1 for both numbers.

 

1 divides both 9 and 11


9 divided by 9 = 1


11 divided by 11 = 1

 

LCM = 9 × 11= 99.
 

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LCM of 9 and 11 using Listing multiples:

We write the multiples of both numbers till we find the common one.


Multiples of 9 : 9,18,27,36,45,54,63,72,81,90,99…


Multiples of 11: 11, 22,33,44,55,66,77,88,99…


The common multiple is 99. So, the LCM of 9 and 11 is 99.
 

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LCM of 9 and 11 using prime factorization:

We part each number into divisors and select the highest powers of all the prime factors.

 

9= 3 × 3


11= 11

 

LCM = 11 × 3 × 3 = 99.
 

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Common Mistakes and How to Avoid Them in LCM of 9 and 11

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Examples of LCM of 9 and 11

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Problem 1

If the LCM of 9 and a number x is 99. Find the missing number x.

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Explanation

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Problem 2

Solve : 54/9 + 121/11

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Explanation

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Problem 3

Simplify the expression: 5 / LCM(9,11) + 6 / LCM(9,11)

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Explanation

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FAQs on LCM of 9 and 11

1.What is the LCM of 8, 9 and 11?

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2.Is 100 a multiple of 6?

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3.Is 49 a factor of 7?

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4.Are all multiples of 7 odd?

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5.What is the GCF of 9 and 11?

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Important glossaries for LCM of 9 and 11

  • Co-prime: two numbers that have only one number that is 1 as their common factor.  For example, 8 and 15 are co-prime numbers.

 

  • Even Number: A natural number is divisible by 2. For example, 2,4,68,10 etc.

 

  • Prime Factorization: The process of parting down a number into its prime factors is called Prime Factorization.  For example, prime factorization of 24 = 2 × 2 × 2 × 3.
     
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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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