Exploring Multiples and LCM Concepts

The video tutorial by Mr. J covers the concepts of multiples, common multiples, and the least common multiple (LCM). It begins with an introduction to multiples, explaining them as results of multiplying a number by integers and relating them to skip counting. The tutorial then provides an example using the numbers 6 and 15, listing their multiples and identifying common multiples. The least common multiple is explained as the smallest shared multiple. The video concludes with a summary of the concepts covered.

What is a multiple?

• A number that divides another number without a remainder

• The result of multiplying a given number by an integer

• The difference between two numbers

• A number that is added to another number

What is a simpler way to think about multiples?

• Skip counting by the number

• Adding the number to itself

• Dividing the number by 2

• Subtracting the number from itself

What is the first multiple of 6?

• 12

• 18

• 24

• 6

What is the fifth multiple of 15?

• 75

• 90

• 60

• 45

What is the second multiple of 6?

• 18

• 24

• 12

• 6

What is the third multiple of 15?

• 75

• 60

• 30

• 45

Which of the following is a common multiple of 6 and 15?

• 12

• 24

• 30

• 45

What should you do if you don't find any common multiples in the first few multiples?

• Divide the numbers

• Change the numbers

• Extend the list of multiples

• Stop looking

What is the next common multiple of 6 and 15 after 30?

• 60

• 48

• 42

• 36

What is the least common multiple (LCM) of 6 and 15?

• 30

• 60

• 75

• 45