Exploring the Concept of Least Common Multiple

The video tutorial explains the concept of the least common multiple (LCM) and how to find it for two numbers. It begins with a definition of multiples and LCM, followed by examples of finding LCM for pairs of numbers like 6 and 10, and 4 and 9. The tutorial includes word problems to apply the concept in real-life scenarios, such as store promotions and restaurant visits. Viewers are encouraged to practice finding LCM with given numbers and word problems.

What is the definition of a multiple?

• A number that can be divided by another number without a remainder.

• A number that is the sum of two other numbers.

• A number that is a factor of another number.

• A number you get after multiplying a number by an integer.

Tags

CCSS.4.OA.B.4

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

• The sum of the two numbers.

• The smallest number that can be divided by two numbers without a remainder.

• The smallest number other than zero that is a multiple of two or more given numbers.

• The largest number that is a multiple of two numbers.

What is the LCM of 6 and 10?

• 20

• 40

• 30

• 60

Which of the following is a multiple of 6?

• 22

• 25

• 14

• 18

Tags

CCSS.4.OA.B.4

What is the LCM of 4 and 9?

• 45

• 36

• 27

• 18

Which of the following is a multiple of 9?

• 16

• 27

• 24

• 32

Tags

CCSS.4.OA.B.4

In the store promotion, which customer will receive both a keychain and a magnet?

• 24th customer

• 30th customer

• 18th customer

• 12th customer

Tags

CCSS.5.OA.B.3

What is the LCM of 3 and 4?

• 6

• 12

• 24

• 18

What is the LCM of 12 and 30?

• 90

• 60

• 30

• 120

At which visit will you first receive both a free beverage and a dessert at the restaurant?

• 45th visit

• 30th visit

• 75th visit

• 60th visit