Greatest Common Factors

List the factors of 12 & 20, then identify the greatest common factor.
12-
20-
GCF=

• 12- 1, 2, 5, 7  20-10, 20, 30, 40 GCF 10
• 12-1, 12, 24, 36  20-20, 40, 60, 80 GCF 40
• 12-2, 4, 6   20-1, 10, 20 GCF 20
• 12-1, 2, 3, 4, 6, 12  20-1, 2, 4,5,10, 20 GCF 4

What is the greatest common factor of 10 and 25?

• 5
• 1
• 10
• ^₁

What are the factors of 16 and 24?

• 16-1, 3, 6, 12, 16
  24-1, 2, 4, 6, 24
• 16-1, 2, 4, 8, 16
  24-1, 2, 3, 4, 6, 8, 12, 24
• 16-16, 32, 48, 54
  24-24, 48, 72, 86
• 16- 1, 2, 16
  24-1, 2, 12, 24

Which is a factor of 15?

• 2
• 3
• 4
• 6

Tags

CCSS.4.OA.B.4

What is the greatest common factor of 8 and 10?

• 1
• 3
• 4
• 2

Find the greatest common factor of
6x⁴y³ - 12x⁴y² + 6x³y²

• 6
• 6xy
• 6x³y²
• 6x⁹y⁶

What is the greatest common factor of the monomials a²b⁵ and a³b³

• a²b³
• a²b⁵
• a³b³
• a³b⁵

What is the Greatest Common Factor of the following polynomial?
12t³ + 30t² + 48t

• 12t
• 6t³
• 6t
• 12t³

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k

What is the GCF of 10a²b³ and 20a²b²?

• 20a²b³
• 10a²b³
• 20ab²
• 10a²b²