Prime Numbers and Factors

This video tutorial covers the concepts of factors, prime numbers, and composite numbers. It begins with an introduction to factors, followed by a detailed explanation of prime and composite numbers using examples. The tutorial then provides strategies for finding factors of various numbers and includes practice problems to reinforce learning. Finally, it reviews the concepts and applies them to real-world scenarios, ensuring a comprehensive understanding of the topic.

What is the product in the multiplication sentence 4 times 2 equals 8?

• 8

• 6

• 2

• 4

Which of the following is a factor of 6?

• 7

• 4

• 3

• 5

What makes a number composite?

• It is an even number

• It has no factors

• It has more than two factors

• It has exactly two factors

How many factors does the number 7 have?

• 4

• 3

• 2

• 1

Which of the following numbers is prime?

• 13

• 15

• 12

• 9

What is the largest factor of 9?

• 9

• 6

• 3

• 1

Which of the following is a factor pair of 12?

• 1 and 12

• 2 and 5

• 3 and 6

• 4 and 8

How many factors does the number 15 have?

• 2

• 5

• 3

• 4

Which number is composite: 16, 18, or 19?

• None

• 16

• 19

• 18

What is the factorization of 21?

• 1, 5, 15, 21

• 1, 4, 6, 21

• 1, 2, 10, 21

• 1, 3, 7, 21