Finding the Least Common Multiple

The video tutorial teaches how to find the least common multiple (LCM) of two numbers by listing their multiples. It introduces the concept of multiples and explains the three-step process to find the LCM: listing multiples, identifying common multiples, and finding the lowest common multiple. The tutorial includes practice problems and word problems involving pizza and Chinese food ordering schedules to illustrate the concept. By the end, viewers will understand how to determine the LCM using different methods, including listing and using a calendar.

What is a multiple of a number?

• A number that divides another number evenly

• A number that is the product of a number and an integer

• A number that is smaller than another number

• A number that is a fraction of another number

Which of the following is NOT a step in finding the least common multiple?

• List the multiples

• Identify the common multiples

• Find the greatest common divisor

• Find the lowest common multiple

If Mr. Jones orders pizza every 4 days and Mr. Kimble every 5 days, when will they both order pizza on the same day?

• 25 days

• 20 days

• 15 days

• 10 days

How can you find the LCM of two numbers using a calendar?

• By marking every day on the calendar

• By counting the days until both numbers align

• By adding the two numbers together

• By circling the multiples of each number and finding the first common day

Mr. Jones orders Chinese food every 8 days and Mr. Kimble every 12 days. What is the LCM of their order days?

• 20 days

• 24 days

• 28 days

• 16 days