Prime and Composite Numbers Concepts

In this video tutorial, Daphne introduces the concepts of prime and composite numbers. Prime numbers are defined as numbers with only two factors: one and the number itself. Examples such as 5, 13, and 29 are provided to illustrate this concept. The video also highlights that 2 is the only even prime number. Composite numbers, on the other hand, have more than two factors. Examples like 15, 27, and 32 are used to demonstrate how composite numbers can be divided by multiple factors. The tutorial emphasizes understanding the difference between these two types of numbers and provides examples to practice.

What is the main topic discussed in the video?

• Geometry

• Prime and Composite Numbers

• Addition and Subtraction

• Fractions

Which of the following is a characteristic of a prime number?

• It has more than two factors.

• It is divisible by 10.

• It has exactly two factors.

• It is always an even number.

Why is the number 5 considered a prime number?

• It has only two factors: 1 and 5.

• It is an even number.

• It is divisible by 3.

• It is a multiple of 10.

Which of the following numbers is a prime number?

• 14

• 13

• 21

• 18

What makes the number 2 unique among prime numbers?

• It is the only odd prime number.

• It is the largest prime number.

• It is the only even prime number.

• It is divisible by 5.

What is the smallest prime number?

• 1

• 5

• 2

• 3

What defines a composite number?

• It is always a prime number.

• It has more than two factors.

• It has exactly two factors.

• It is always an odd number.

Which of the following is a composite number?

• 3

• 15

• 11

• 7

How can you determine if a number is composite?

• It is always an even number.

• It is divisible by 1 and itself only.

• It is divisible by more than two numbers.

• It is a prime number.

Which of the following numbers is NOT a composite number?

• 32

• 29

• 27

• 9