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Last updated on November 29th, 2024

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LCM of 5 and 15

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LCM is a common multiple, the smallest value between the numbers 5 and 15. Did you know? We apply LCM unknowingly in everyday situations like setting alarms and to synchronize traffic lights and when making music.

LCM of 5 and 15 for Indonesian Students
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How to find the LCM of 5 and 15

The LCM of 5 and 15 is 15. 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 5 and 15 using the Listing Multiples Method

Step 1: Write down the multiples of the numbers. Don’t stop too early.


  — Multiples of 5 = 5,10,15,20,25,30,…


  — Multiples of 15 = 15,15,45,60,75,…


Step 1: Find the smallest number common between the written multiples of 5, 15. 


— The smallest common multiple is 15


Thus, LCM(5,15) = 15

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LCM of 5 and 15 using the Prime Factorization Method

Step 1: factorize the numbers into its prime factors 


5 = 5×1


15 = 5×3


Step 2: find the highest powers of the factors of 5 and 15


Step 2: Multiply the highest powers 


LCM(5,15) = 15

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LCM of 5 and 15 using the Division Method

  • Write the numbers 5,15 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(5,15) = 15
     
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Common Mistakes and how to avoid them while finding the LCM of 5 and 15

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LCM of 5 and 15, examples

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Problem 1

The LCM of two numbers is 15, and one number is 5, what percentage of the LCM is 5?

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Explanation

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Problem 2

If the LCM of 5 and a number xxx is 15, what is xxx?

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Explanation

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Max, the Girl Character from BrightChamps

Problem 3

If the LCM of 5 and 15 is increased by 50%, what is the new value?

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Explanation

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FAQs on LCM of 5 and 15

1.What is the LCM of 5,10 and 15?

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2.What are the common factors of 3 and 5?

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3.What are the common factors of 5 and 12 ?

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4.What is the LCM of 12 and 15?

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5.What is the LCM of 5 and 25 ?

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6.How can children in Indonesia use numbers in everyday life to understand LCM of 5 and 15?

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7.What are some fun ways kids in Indonesia can practice LCM of 5 and 15 with numbers?

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8.What role do numbers and LCM of 5 and 15 play in helping children in Indonesia develop problem-solving skills?

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9.How can families in Indonesia create number-rich environments to improve LCM of 5 and 15 skills?

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Important glossaries on the LCM of 5 and 15

  • 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. 
     
Professor Greenline from BrightChamps

About BrightChamps in Indonesia

At BrightChamps, numbers are more than simple digits—they unlock countless opportunities! We are dedicated to helping children all over Indonesia grasp key math skills, focusing today on the LCM of 5 and 15 with an emphasis on understanding the LCM—in a way that’s fun, engaging, and easy to follow. Whether your child is calculating the speed of a roller coaster at Dunia Fantasi, tracking scores at badminton matches, or managing their allowance for the latest gadgets, mastering numbers gives them confidence for everyday tasks. Our interactive lessons keep learning fun and easy. Since kids in Indonesia learn in diverse ways, we tailor our approach to each child’s needs. From the lively streets of Jakarta to the beautiful beaches of Bali, BrightChamps brings math to life, making the LCM a fun part of every child’s learning journey!
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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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