Prime and Composite Numbers Examples with Solutions (Grade 6)

📚 Quick Study Guide

• 🔑 Prime Number: A whole number greater than 1 that has only two factors (divisors): 1 and itself. Examples: 2, 3, 5, 7, 11.
• ➗ Composite Number: A whole number greater than 1 that has more than two factors. Examples: 4, 6, 8, 9, 10.
• ☝️ The number 1: Is neither prime nor composite.
• 🔢 Factors: Numbers you can multiply together to get another number. For example, the factors of 6 are 1, 2, 3, and 6.
• 📝 Prime Factorization: Expressing a composite number as a product of its prime factors.

🧪 Practice Quiz

1. What is the smallest prime number?
   1. 0
   2. 1
   3. 2
   4. 3
2. Which of the following numbers is a composite number?
   1. 7
   2. 11
   3. 13
   4. 9
3. How many factors does a prime number have?
   1. 0
   2. 1
   3. 2
   4. 3
4. Which of these numbers is NOT a prime number?
   1. 17
   2. 19
   3. 21
   4. 23
5. Which of the following is a prime number?
   1. 4
   2. 6
   3. 8
   4. 10
6. What are all the factors of 12?
   1. 1, 2, 3, 4, 6
   2. 1, 2, 3, 4, 6, 12
   3. 2, 3, 4, 6, 12
   4. 1, 3, 4, 6, 12
7. Which of the following is both a factor of 36 AND a composite number?
   1. 2
   2. 3
   3. 4
   4. 5