Exploring Greatest Common Factor and Least Common Multiple

The video tutorial covers the concepts of least common multiples (LCM) and greatest common factors (GCF). It explains what multiples and factors are, how to find the LCM and GCF of two numbers, and their applications in simplifying fractions. The tutorial provides examples and step-by-step instructions to help students understand these mathematical concepts and apply them in solving problems.

What does LCM stand for?

• Least Common Measure

• Largest Common Multiple

• Least Common Multiple

• Largest Common Measure

Which of the following is a multiple of 5?

• 7

• 10

• 12

• 14

What is the least common multiple (LCM) of 10 and 12?

• 20

• 60

• 30

• 40

Why is finding the LCM important when dealing with fractions?

• It helps in multiplying fractions.

• It helps in finding a common denominator.

• It helps in dividing fractions.

• It helps in finding the greatest common factor.

What is the least common multiple (LCM) of 4 and 3?

• 12

• 8

• 6

• 10

What does GCF stand for?

• Greatest Common Function

• Greatest Common Fraction

• Greatest Common Formula

• Greatest Common Factor

Which of the following is a factor of 15?

• 2

• 6

• 3

• 4

What is the greatest common factor (GCF) of 15 and 12?

• 1

• 2

• 3

• 5

How does knowing the GCF help in reducing fractions?

• It helps in multiplying the fraction.

• It helps in dividing the fraction to its simplest form.

• It helps in finding a common numerator.

• It helps in finding the least common multiple.

What is the greatest common factor (GCF) of 54 and 81?

• 18

• 27

• 36

• 9