Understanding LCM and GCF of 7 and 8

This video tutorial explains how to find the lowest common multiple (LCM) and the greatest common factor (GCF) of the numbers 7 and 8. It begins with an introduction to the concepts, followed by creating factor trees to identify the prime factors of each number. The video then demonstrates how to determine the GCF, which is 1, and the LCM, which is 56. The tutorial concludes with a summary and a call to action to subscribe for more math and science videos.

What is the main objective of the video?

• To learn about prime numbers

• To solve complex equations

• To find the lowest common multiple and greatest common factor of 7 and 8

• To find the sum of 7 and 8

What is the prime factor of 7?

• 5

• 7

• 3

• 2

How is the number 8 broken down in the factor tree?

• 8 x 1

• 4 x 2

• 2 x 3

• 2 x 2 x 2

What is the greatest common factor of 7 and 8?

• 8

• 7

• 14

• 1

What is the first step in finding the lowest common multiple?

• Add all numbers

• Bring down all numbers

• Divide the numbers

• Subtract the numbers

What is the lowest common multiple of 7 and 8?

• 56

• 14

• 112

• 28

If there is a vertical pair in the factor chart, how many of the numbers do you bring down?

• Two of them

• Only one

• None of them

• All of them

What is another term some people use for the lowest common multiple?

• Greatest common factor

• Common divisor

• Least common multiple

• Prime factor

What does the video encourage viewers to do at the end?

• Watch another video

• Read a math book

• Subscribe and share the video

• Solve more math problems