Prime and Composite Practice 3

Prime or Composite: 23

• prime

• composite

Prime or Composite: 77

• Prime

• Composite

Prime or Composite: 2

• Prime

• Composite

Which list contains only prime numbers?

• 2, 3, 4, 5

• 1, 5, 7, 9

• 2, 3, 5, 7

• 2, 4, 6, 8

This area model represents the number 21. 21 is....

• Prime

• Composite

• Neither

This area model represents the number 9. Is 9 a prime or composite number?

• neither

• prime

• composite

What is the prime factorization of 48?

• 4x2x6
• 4x2x2x3
• 3x2x2x2x2
• 12x4

2 x 2 x 2 is the prime factorization of...

• 6
• 12
• 22
• 8

What are the prime factors of 27?

• 3x3x3

• 3x2x3

• 3x3x4

What is the missing factor?

• 1

• 2

• 5

• 8