Prime, Composite, and Square Numbers

The video tutorial explains the concepts of square, prime, and composite numbers. It begins with an introduction to square numbers, providing examples like 1, 4, 9, 16, and 25. The video then defines square numbers as the product of a whole number with itself, prime numbers as numbers divisible only by 1 and themselves, and composite numbers as those divisible by numbers other than 1 and themselves. Examples of prime numbers such as 2, 3, and 5 are given, along with an explanation of composite numbers like 4, 6, and 8. The tutorial reiterates these definitions and provides a summary of the number types.

Which of the following is a square number?

• 7

• 20

• 16

• 10

What is a characteristic of a prime number?

• It is divisible by 1 and itself only

• It is a product of two numbers

• It can be divided by 1, 2, and itself

• It is always an even number

Which of these numbers is a prime number?

• 8

• 9

• 4

• 5

What is the first composite number?

• 5

• 4

• 3

• 2

How many ways can a composite number be divided evenly?

• At least two

• At least three

• Only one

• Exactly two