Least Common Multiple

The video tutorial explains the concept of multiples and how to find them, using the number 5 as an example. It then introduces the least common multiple (LCM) and demonstrates how to find the LCM of two numbers, using examples with the numbers 3 and 4, and 2 and 7. The tutorial emphasizes listing multiples until a common one is found, highlighting the importance of understanding multiples and LCM in mathematics.

What is a multiple of a number?

• A number that is less than another number

• The product of a number and any positive integer

• The sum of a number and any positive integer

• A number that divides another number without a remainder

Which of the following is NOT a multiple of 5?

• 10

• 15

• 22

• 25

What is the least common multiple (LCM) of 3 and 4?

• 6

• 9

• 12

• 15

How do you find the least common multiple of two numbers?

• By subtracting the smaller number from the larger one

• By listing the multiples of each number and finding the smallest common one

• By dividing the larger number by the smaller one

• By adding the numbers together

What is the least common multiple of 2 and 7?

• 18

• 16

• 14

• 12