Finding Least Common Multiple Methods

The video tutorial reviews the concept of the least common multiple (LCM) using a special request from a viewer to find the LCM of three numbers: 12, 30, and 75. The instructor demonstrates the upside down birthday cake method, explaining how to identify common factors and calculate the LCM step by step. The video concludes with the final LCM result of 300 and a thank you to the viewers.

What is the main topic of the video?

• Least Common Multiple

• Greatest Common Divisor

• Prime Factorization

• Fraction Addition

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

• Long Division

• Upside-Down Birthday Cake

• Euclidean Algorithm

• Prime Factorization

What are the numbers used in the example for finding the LCM?

• 10, 20, 30

• 5, 15, 25

• 8, 16, 24

• 12, 30, 75

What is the first prime number used to divide the numbers 12, 30, and 75?

• 3

• 2

• 7

• 5

After dividing by 3, what are the resulting numbers?

• 4, 10, 25

• 6, 15, 30

• 3, 5, 15

• 2, 5, 10

What is the next step after dividing by 3 in the upside-down birthday cake method?

• Multiply the results

• Divide by 2

• Divide by 5

• Add the results

Which two numbers can be divided by 2 in the next step?

• 10 and 25

• 4 and 25

• 2 and 5

• 4 and 10

What is the result of dividing 4 and 10 by 2?

• 2 and 5

• 1 and 5

• 2 and 10

• 3 and 5

Which number is brought down without division in the method?

• 4

• 25

• 5

• 10

What is the next prime number used after dividing by 2?

• 3

• 5

• 7

• 11