Finding Least Common Multiples and Word Problems

The video tutorial introduces the concept of Least Common Multiple (LCM) and demonstrates how to find the LCM of numbers using the continuous division method. It includes examples with numbers 6 and 10, 12, 16, and 18, and 15, 25, and 30. Additionally, it solves word problems involving swimming practice schedules and fast food offers using LCM.

What is the least common multiple (LCM) of two numbers?

• The largest number that divides both numbers

• The smallest number that is a multiple of both numbers

• The difference between the two numbers

• The sum of the two numbers

Which method is used to find the LCM in the video?

• Addition method

• Prime factorization

• Subtraction method

• Continuous division

In the example of finding the LCM of 6 and 10, what is the first number used to divide both?

• 3

• 10

• 5

• 2

What is the LCM of 6 and 10?

• 40

• 50

• 20

• 30

In the example of finding the LCM of 12, 16, and 18, what is the first number used to divide all three?

• 3

• 4

• 2

• 6

What is the LCM of 12, 16, and 18?

• 180

• 120

• 144

• 160

In the example of finding the LCM of 15, 25, and 30, what is the first number used to divide all three?

• 5

• 3

• 15

• 10

What is the LCM of 15, 25, and 30?

• 100

• 180

• 120

• 150

In the word problem about Johnson's practice, how often does Johnson practice?

• Every 2 days

• Every 3 days

• Every 4 days

• Every 5 days

In the word problem about Johnson's practice, how often does a dad practice?

• Every 3 days

• Every 5 days

• Every 4 days

• Every 2 days