🔍 Part 1: Prime Detective

1. Circle the correct definition of a prime number:

A number that has exactly two factors: 1 and itself

A number that is always odd

A number greater than 10

A number that ends in 1, 3, 7, or 9

2. Which of these statements about the number 2 is correct?

2 is not a prime number because it's even

2 is the only even prime number

2 is a composite number

2 has more than two factors

3. Look at the number 15. Tick all the factors of 15:

1

2

3

5

15

4. Is 15 a prime or composite number? Circle your answer:

Prime

Composite

📊 Part 2: Number Classification

5. Sort these numbers into prime or composite by writing them in the correct column:

Numbers to sort: 7, 9, 11, 12, 13, 14, 17, 18

Prime Numbers

Composite Numbers

6. Fill in the blanks with the correct words:

A _____________ number has exactly two factors, while a _____________ number has more than two factors. The smallest prime number is _____.

7. Show your working to prove that 21 is a composite number by listing all its factors:

🌟 Part 3: Real-World Connections

8. Prime numbers are used in internet security and banking. Why do you think prime numbers are useful for keeping information safe?

9. Challenge: Find the next three prime numbers after 17:

The next three prime numbers are: _____, _____, and _____

10. Reflection: Write one interesting fact you learned about prime numbers today:

Prime and Composite Numbers

Prime and Composite Numbers

🔍 Part 1: Prime Detective

📊 Part 2: Number Classification

🌟 Part 3: Real-World Connections

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