1.2 Prime Factorization

Write 28 as a product of its prime factors.

• 2x2x7
• 4x7

Write 54 as a product of its prime factors.

• 2x2x3x3
• 2x3x3x3
• 2x3x9
• 6x9

Which list contains all prime numbers?

• 2, 3, 5, 7, 11
• 2, 3, 5, 7, 9
• 2, 4, 5, 7, 11
• 2, 3, 5, 7, 12

Tags

CCSS.4.OA.B.4

Which list contains composite numbers?

• 4, 6, 8, 9, 12
• 2, 4, 6, 7, 12
• 4, 6, 8, 9, 13
• 12, 14, 16, 17, 18

Tags

CCSS.4.OA.B.4

Write 105 as a product of its prime factors.

• 3x5x7
• 15x7 
• 3x35
• 2x5x7

A prime number includes numbers that are only divisible by 1 and itself.

• True
• False

Tags

CCSS.4.OA.B.4

A composite number contains only numbers that are even.

• True
• False

Tags

CCSS.4.OA.B.4

Write 64 as a product of its prime factors.

• 8x8
• 4x4x4
• 2x2x2x2x2x2
• 2x2x4x4

Tags

CCSS.6.EE.A.1

210 written as a product of its prime factors is 2x3x5x7.

• True
• False

Write 63 as a product of its prime factors. 

• 2x3x7
• 3x21
• 9x7
• 3x3x7