Prime and Composite Numbers Concepts

The video tutorial reviews prime and composite numbers using a Halloween candy activity. It explains how to identify composite numbers by finding their factors and demonstrates that prime numbers have only two factors: one and the number itself. The tutorial provides rules for identifying composite numbers, such as checking for even numbers and multiples of three, five, and seven. The session concludes with a preview of the next topic: area, perimeter, and volume.

What is the main topic of the session introduced at the beginning?

• Mathematical operations

• Birthday party planning

• Prime and composite numbers

• Halloween candy distribution

How many different ways can you distribute 16 pieces of candy to trick-or-treaters?

• Five ways

• Four ways

• Three ways

• Two ways

Why is the number 16 considered a composite number?

• It is an even number

• It is a prime number

• It has more than two factors

• It has only two factors

What makes the number 17 a prime number?

• It has more than two factors

• It is divisible by 2

• It has exactly two factors

• It is an odd number

Which of the following is NOT a rule for identifying composite numbers?

• Multiples of three

• Multiples of five

• Numbers ending in 1

• Even numbers except 2

What is a key characteristic of even numbers?

• They can be divided evenly into two groups

• They end in 1, 3, 5, 7, or 9

• They are always prime numbers

• They have only one factor

Which number is an exception to the rule that all even numbers are composite?

• 6

• 4

• 2

• 8

How can you determine if a number is a multiple of three?

• Check if it ends in 0 or 5

• Add its digits and see if the sum is a multiple of three

• Divide it by 2

• Check if it is an even number

Which of the following numbers is a multiple of seven not covered by other rules?

• 21

• 28

• 14

• 49

What is the definition of a prime number?

• A number with more than two factors

• A number that ends in 0 or 5

• A number with exactly two factors: 1 and itself

• A number that is divisible by 2