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Last updated on November 29th, 2024

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LCM of 3 and 8

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Foundation
Intermediate
Advance Topics

LCM is a common multiple, the smallest value between the numbers 3 and 8. Did you know? We apply LCM unknowingly in everyday situations like setting alarms and to synchronize traffic lights and when making music.

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What is the LCM of 3 and 8?

The LCM of 3 and 8 is 24. We can find the LCM using the Listing multiples method, the prime factorization method and the long division method. These are explained below. 

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LCM of 3 and 8 Using Listing the Multiples

Write down the multiples of the numbers. Don’t stop too early.


Multiples of 3 = 3,6,9,12,18,21,24…


Multiples of 8 = 8, 16,24,…


Find the smallest number common between the written multiples of 3 and 8

 

The smallest common multiple is 24.


Thus, LCM(3, 8) = 24.
 

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LCM of 3 and 8 Using Prime Factorization

factorize the numbers into its prime factors 


3 = 3×1


8 = 2×2×2


find the highest powers of the factors of 3 and 8


Multiply the highest powers 


LCM(3,8) = 24
 

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LCM of 3 and 8 Using Division Method

Write the numbers 3,8 in a row 


Divide them by their common prime factors, if there is one


Carry forward the numbers that are left undivided by the previously chosen factor


Continue dividing until the remainder is ‘1’ 


Multiply the divisors to find the LCM


LCM(3, 8) = 24.

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Common Mistakes and how to avoid them while finding the LCM of 3 and 8

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LCM of 3 and 8, examples

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Problem 1

Use LCM(a,b) = a×b/HCF(a,b) to find the LCM of 3 and 8.

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Explanation

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Problem 2

Goods are received by a shipping company every 3 and 8 months. If the shipments have been received today, when will they next arrive at the same day?

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Explanation

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Problem 3

LCM of (3,x) is 6. Find x.

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Explanation

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FAQs on LCM of 3 and 8

1.Is 32 a common multiple of 3 and 8 ?

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2. What is the HCF of 3 and 8?

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3. What is divisible by both 3 and 8 ?

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4.What is a multiple of 3 and 8?

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5.What is the LCM of 3,8 and 24 ?

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Important glossaries for the LCM of 3 and 8

  • Multiple — product of a number and a natural integer 

 

  • Prime factor — number one gets after prime factorization any given number 

 

  • Prime factorization — the process of breaking the number into its prime factors. 
     
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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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