Finding the Least Common Multiple: A Deep Dive

Miss Berg explains how to find the least common multiple (LCM) using a Ferris wheel problem. She demonstrates the process with examples, including the use of repeated addition and multiplication to find multiples. The concept of the Shmu is introduced as a fun way to visualize LCM. The video concludes with another example using different numbers to reinforce the learning.

What is the main problem the students are trying to solve in the video?

• Determining the total distance traveled

• Calculating the average speed

• Finding the least common multiple

• Finding the greatest common divisor

What is the first step in finding the LCM of 12 and 8?

• Adding the numbers

• Subtracting the numbers

• Dividing the numbers

• Listing the multiples of each number

What is the LCM of 12 and 8?

• 32

• 48

• 16

• 24

What is the purpose of the 'shmu' in the lesson?

• To show the end of a problem

• To represent the number 12

• To indicate the greatest common divisor

• To help with multiplication

What is the first multiple of 16 listed in the second example?

• 10

• 20

• 16

• 32

What is the LCM of 16 and 20?

• 40

• 60

• 100

• 80

How many times is 16 added to itself to reach 64?

• 4 times

• 5 times

• 3 times

• 2 times

Tags

CCSS.3.OA.A.3

What is the second multiple of 20 listed in the second example?

• 80

• 60

• 40

• 20

Why does the teacher stop listing multiples of 16 at 80?

• Because 80 is the highest number

• Because 80 is the smallest number

• Because 80 is a multiple of 20

• Because 80 is a multiple of 16

What is the final step in finding the LCM of two numbers?

• Dividing the numbers

• Finding the smallest common multiple

• Subtracting the numbers

• Adding the numbers