Finding the Least Common Multiple

This video tutorial covers the concept of the least common multiple (LCM), starting with a definition and moving through examples using both the list and table methods. It includes practical applications, such as solving a word problem involving store promotions. The tutorial also explains a rule for finding the LCM when one number is a multiple of another, using examples to illustrate the concept.

What does LCM stand for in mathematics?

• Largest Common Multiple

• Least Common Multiple

• Least Common Measure

• Largest Common Measure

How is LCM different from GCF?

• LCM and GCF are the same.

• LCM is used for addition, while GCF is used for subtraction.

• LCM is the largest common multiple, while GCF is the smallest common factor.

• LCM is the smallest common multiple, while GCF is the largest common factor.

What is the LCM of 3 and 9?

• 3

• 6

• 9

• 12

In the store promotion example, which customer will receive both a keychain and a magnet?

• 12th customer

• 9th customer

• 15th customer

• 6th customer

What method is used to find the LCM in the store promotion example?

• Prime factorization

• Subtraction method

• List method

• Division method

What is the LCM of 4 and 9 using the table method?

• 36

• 32

• 24

• 18

Which method is demonstrated to find the LCM of 4 and 9?

• Division method

• List method

• Table method

• Prime factorization

If one number is a multiple of another, what is the LCM?

• The smaller number

• The larger number

• The difference of the numbers

• The sum of the numbers

What is the LCM of 4 and 8?

• 4

• 12

• 6

• 8

Why is it recommended to list out multiples when finding the LCM?

• To practice multiplication

• To avoid using a calculator

• To make it more complex

• To ensure accuracy