Table Of Contents

Table of Contents

What is the LCM of 21 and 24?

How to find the LCM of 21 and 24?

LCM of 21 and 24 using Division method:

LCM of 24 and 21 using Listing multiples:

LCM of 24 and 21 using Prime factorization:

Common Mistakes and How to Avoid Them in LCM of 24 and 21

LCM of 24 and 21 Examples

FAQ’s on LCM of 24 and 21

Important glossaries on the LCM of 24 and 21

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156 Learners

Last updated on November 29th, 2024

LCM of 21 and 24

Q: There are how many factors in 4800?

There are 42 factors of 3600, but the prime factors are 26,3,52.

Q: Write the LCM of 21,24, and 18?

Prime factorization of 21 = 7×3 Prime factorization of 24 = 23×3 Prime Factorization of 18 =2×32 LCM (12,24,18) = 32×23×7 = 504

Q: What is the GCF of 300 by factor tree method?

The GCF is the greatest common factor of the number. The factors are 2,3 and 5.

Q: How can children in Qatar use numbers in everyday life to understand LCM of 21 and 24?

Numbers appear everywhere—from counting money to measuring ingredients. Kids in Qatar see how LCM of 21 and 24 helps solve real problems, making numbers meaningful beyond the classroom.

Q: What are some fun ways kids in Qatar can practice LCM of 21 and 24 with numbers?

Games like board games, sports scoring, or even cooking help children in Qatar use numbers naturally. These activities make practicing LCM of 21 and 24 enjoyable and connected to their world.

Q: What role do numbers and LCM of 21 and 24 play in helping children in Qatar develop problem-solving skills?

Working with numbers through LCM of 21 and 24 sharpens reasoning and critical thinking, preparing kids in Qatar for challenges inside and outside the classroom.

Q: How can families in Qatar create number-rich environments to improve LCM of 21 and 24 skills?

Families can include counting chores, measuring recipes, or budgeting allowances, helping children connect numbers and LCM of 21 and 24 with everyday activities.

Professor Greenline Explaining Math Concepts

The meaning of least common factor (LCM) is to find the smallest number that divides any two integers evenly. LCM is used mainly in fractions to find a common number for both the integers. We use LCM for solving problems, lining up cycles or even synchronizing of events, also to schedule tasks in everyday life.

LCM of 21 and 24 for Qatari Students

What is the LCM of 21 and 24?

We use LCM of 21 and 24 to find the smallest number that divides both the numbers equally. The smallest positive number is the number that divides both numbers equally, is 168 without leaving any remainder. LCM is used mainly in fractions to find a common number for both the integers.

How to find the LCM of 21 and 24?

The LCM of 21 and 24 can be found by the following methods like division method, listing multiples, prime factorization.

LCM of 21 and 24 using Division method:

In division method, we divide both the numbers, we begin with dividing side by side the smallest number. We continue dividing until we get a common number that divides both the numbers equally. It makes it easier for the children to focus on prime factors and identify them.

2 divides 24 and not 21

3 divides 24 and 21

12 divides 24 and not 21

7 divides 21 and not 24.

Now multiply the divisors : 2×3×4×7=168 which is the LCM.

LCM of 24 and 21 using Listing multiples:

Step 1: Start by listing multiples of both the numbers separately:

Multiples of 21 are 21,42,63,84,105,126,147,168…..

Multiples of 24 are 24,48,72,96120,144,168…..

Step 2: The least common factor from the list is 168. Therefore, the LCM of 24 and 21 is 168.

LCM of 24 and 21 using Prime factorization:

We part both the numbers unto factors:

Factor of 24: 2³×3

Factors of 21: 3×7

Take the powers of both the numbers and multiply together:

LCM=2³x3x7=168.

Common Mistakes and How to Avoid Them in LCM of 24 and 21

LCM of 24 and 21 Examples

Ray, the Character from BrightChamps Explaining Math Concepts

Problem 1

Is 504 a common multiple of 24 and 21?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

Explanation

Problem 2

Simplify the fraction 24/21 using the GCD of the numerator and denominator.

Explanation

Problem 3

List the first 5 multiples of 24 and 21. Identify the LCM from these lists.

Explanation

Problem 4

Find the value of X, if LCM(24,X)=168.

Explanation

Problem 5

Find the simplified form of 24/21.

Explanation

FAQ’s on LCM of 24 and 21

1. What is the number that can be divided by 21 and 24?

2.There are how many factors in 4800?

3.Write the LCM of 21,24, and 18?

4.What is the GCF of 240 and 360?

5.What is the GCF of 300 by factor tree method?

6.How can children in Qatar use numbers in everyday life to understand LCM of 21 and 24?

7.What are some fun ways kids in Qatar can practice LCM of 21 and 24 with numbers?

8.What role do numbers and LCM of 21 and 24 play in helping children in Qatar develop problem-solving skills?

9.How can families in Qatar create number-rich environments to improve LCM of 21 and 24 skills?

Important glossaries on the LCM of 24 and 21

Prime Factor: A natural number or whole number which has factors that are 1 and itself. For Example, 3 is a prime number.

Prime Factorization: The process of breaking down a number into its prime factors is called Prime Factorization. For example, the factorization of 14 is 2×7.

Co-prime numbers: numbers which has the only positive divisor of them both as 1. For example, 6 and 7.

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About BrightChamps in Qatar

At BrightChamps, numbers represent more than digits—they unlock countless opportunities! Our goal is to help children throughout Qatar master important math skills, focusing on the LCM of 21 and 24 with special attention on understanding the LCM—in a lively, fun, and easy way. Whether your child is calculating how fast a roller coaster moves at Qatar’s Angry Birds World, keeping score at local football matches, or managing their allowance to buy gadgets, mastering numbers builds confidence for daily challenges. Our interactive lessons make learning enjoyable and simple. Because children in Qatar learn in many different ways, we adapt our approach to suit each learner. From Doha’s modern cityscape to desert landscapes, BrightChamps makes math come alive. Let’s make the LCM a fun part of every child’s learning!

$Math Teacher Image$

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.