GCF and LCM Problems

What is the GCF of 12 and 8?

• 4
• 2
• 6
• 1

What is the GCF of 15 and 25?

• 10
• 3
• 5
• 2

List all the factors of 18

• 1, 6, 9, 18
• 1, 2, 3, 4, 18
• 1, 2, 3, 6, 9, 18
• 2, 6, 9, 18

Tags

CCSS.4.OA.B.4

Which is a NOT a factor of 9?

• 0
• 1
• 3
• 9

Tags

CCSS.4.OA.B.4

Find the LCM of 42 and 66

• 2772
• 6
• 462
• 132

Find the GCF of 64 and 144

• 8
• 6
• 16
• 2

What is the GCF of 15 and 25?

• 10
• 3
• 5
• 2

What is the GCF of 12 and 8?

• 4
• 2
• 6
• 1

Which of the following is a multiple of 7?

• 28
• 48
• 71
• 45

Tags

CCSS.4.OA.B.4

Is the number prime or composite?
25

• Prime
• Composite

Tags

CCSS.4.OA.B.4