Mastering LCM and GCF Concepts

The video tutorial introduces the concepts of LCM (Least Common Multiple) and GCF (Greatest Common Factor), explaining their meanings and how to calculate them. It begins with a humorous introduction, then delves into the definition of multiples and how to find the LCM of two numbers. The tutorial continues by explaining the GCF, using examples and prime factorization to illustrate the process. The video concludes with a light-hearted joke and encourages viewers to subscribe and follow on social media.

What do the acronyms LCM and GCF stand for?

• Least Common Multiple and Greatest Common Factor

• Largest Common Multiple and Greatest Common Fraction

• Least Common Measure and Greatest Common Factor

• Largest Common Measure and Greatest Common Fraction

Which of the following is a multiple of 6?

• 11

• 12

• 7

• 5

Tags

CCSS.4.OA.B.4

What is the least common multiple (LCM) of 6 and 8?

• 12

• 30

• 24

• 18

Which of the following is NOT a factor of 36?

• 6

• 2

• 3

• 5

Tags

CCSS.4.OA.B.4

What is the greatest common factor (GCF) of 36 and 48?

• 12

• 10

• 8

• 6

Which of the following is a prime factor of 36?

• 8

• 2

• 4

• 6

Tags

CCSS.4.OA.B.4

What is the prime factorization of 48?

• 2 * 3 * 3 * 3

• 2 * 2 * 2 * 2 * 3

• 2 * 2 * 3 * 3

• 2 * 2 * 2 * 3 * 3

Which of the following numbers is a common factor of both 36 and 48?

• 7

• 9

• 5

• 12

What is the result of multiplying the common prime factors of 36 and 48?

• 6

• 18

• 8

• 12

What is a good method to find the GCF of two numbers?

• Addition

• Division

• Subtraction

• Prime Factorization