GCF practice

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

Find the GCF: x⁴ , x³ , x²

• x⁴

• x³

• x²

• x

Find the GCF: m¹⁰, m⁴

• m¹⁰

• m⁴

• m

• There is no GCF

Find the GCF: y³ , y² , y

• y³

• y²

• y

• There is no GCF

Find the GCF: a⁵b² , a⁸b

• a⁵b²

• a⁸b

• a⁵b

• There is no GCF

Factor:
18a²-15a

• 15a(3a-1)
• 3a(6a-1)
• 3(6a-5)
• 3a(6a-5)

Factor by GCF:
56a³ - 8a

• 8a²(56a³-8a)
• 8a(7a²-1)
• 8a(7a³-a)
• 8a²(35a²-a)

Factor by GCF:
10x² + 15x - 5

• 25(10x³+45x-15)
• 5(2x³ + 3x²-x)
• x(10x³+15x-5)
• 5(2x²+3x-1)