Finding the LCM and Prime Numbers

The video tutorial from Mumu Math and Science explains how to find the Lowest Common Multiple (LCM) of two sets of numbers: 3 and 5, and 2 and 3. The instructor demonstrates using factor trees and charts to identify the LCM, emphasizing the simplicity of the process with prime numbers. The video concludes with a reminder about the importance of kindness.

What is the first step in finding the LCM of two numbers?

• Divide the larger number by the smaller

• Add the numbers together

• Create a factor tree for each number

• Subtract the smaller number from the larger

Why is there no factor tree for the numbers 3 and 5?

• They are both composite numbers

• They are both even numbers

• They are both odd numbers

• They are both prime numbers

What is the purpose of creating a chart when finding the LCM?

• To list the multiples of the numbers

• To list the even numbers

• To list the prime numbers

• To list the factors of the numbers

How do you find the LCM once you have the factors listed?

• Divide the larger factor by the smaller

• Subtract the factors

• Multiply the numbers together

• Add the factors together

What is the LCM of the numbers 3 and 5?

• 20

• 15

• 10

• 25

What is the LCM of the numbers 2 and 3?

• 5

• 7

• 6

• 4

Why is there no factor tree for the numbers 2 and 3?

• They are both odd numbers

• They are both prime numbers

• They are both composite numbers

• They are both even numbers

What is the final step in finding the LCM of two prime numbers?

• Add the numbers together

• Subtract the smaller number from the larger

• Multiply the numbers together

• Divide the larger number by the smaller

What motivational message is shared at the end of the video?

• Kindness multiplies kindness

• Kindness subtracts kindness

• Kindness adds kindness

• Kindness divides kindness