Least Common Multiple Concepts

The video tutorial covers the concept of the least common multiple (LCM), starting with an introduction and definition. It includes practical examples and activities, such as Ned's biathlon training and a store promotion, to illustrate how to find and apply LCM in real-life situations. The tutorial also explores special cases and properties of LCM, providing a comprehensive understanding of the topic. The video concludes with a summary of key concepts and methods for finding LCM.

What is the least common multiple of two numbers?

• The smallest number that is a multiple of both numbers.

• The largest number that divides both numbers.

• The sum of the two numbers.

• The difference between the two numbers.

In Ned's training schedule, how often does he swim?

• Every 10th day

• Every 8th day

• Every 6th day

• Every 4th day

On which day will Ned both swim and bicycle for the first time?

• 24th day

• 18th day

• 30th day

• 12th day

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

• 6th customer

• 9th customer

• 12th customer

• 15th customer

What is the LCM of 4 and 9?

• 24

• 18

• 36

• 48

If two numbers are prime, how do you find their LCM?

• Subtract the smaller number from the larger.

• Multiply the two numbers.

• Divide the larger number by the smaller.

• Add the two numbers.

What is the LCM of 8 and 56?

• 112

• 28

• 8

• 56

What is the relationship between LCM and GCF?

• GCF is always greater than LCM.

• LCM is always greater than or equal to the larger number.

• LCM is always smaller than GCF.

• LCM and GCF are always equal.

How often will Kevin water both his ivy and cactus in February?

• Every 5 days

• Every 30 days

• Every 15 days

• Every 3 days

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

• The difference of the numbers

• The larger number

• The smaller number

• The sum of the numbers