Finding the Least Common Multiple Made Easy

The video tutorial by Mr. J covers the concept of the least common multiple (LCM), explaining its significance in mathematics, especially when dealing with fractions. The tutorial breaks down the terms 'least', 'common', and 'multiple' and provides four examples to illustrate how to find the LCM of different sets of numbers. The video emphasizes the importance of identifying the smallest common multiple and offers strategies for extending lists of multiples to find the LCM. The tutorial concludes with a summary of the key points discussed.

What does the term 'least' signify in the context of Least Common Multiple?

• The smallest value

• The largest value

• A prime number

• A shared value

When finding multiples of a number, what mathematical operation is primarily used?

• Division

• Addition

• Multiplication

• Subtraction

What is the Least Common Multiple (LCM) of 3 and 6?

• 6

• 12

• 3

• 9

Which of the following is a multiple of 4?

• 13

• 11

• 8

• 5

Tags

CCSS.4.OA.B.4

What is the LCM of 4 and 10?

• 40

• 10

• 20

• 30

What is the LCM of 9 and 6?

• 12

• 9

• 18

• 24

Why might you need to extend your list of multiples when finding the LCM?

• To find the largest common multiple

• To find the smallest common multiple

• To find the prime factors

• To find more common multiples

What is the LCM of 12, 4, and 8?

• 12

• 16

• 20

• 24

If you don't find a common multiple in your initial list, what should you do?

• Stop and choose the largest number

• Extend the list of multiples

• Choose the smallest number

• Start over with new numbers

What does LCM stand for?

• Last Common Multiple

• Lowest Common Multiple

• Largest Common Multiple

• Least Common Multiple