Greatest Common Factor

Which set of numbers show all the factors for 15?

• 7, 8
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

Tags

CCSS.4.OA.B.4

What is the greatest common factor of 6 and 21?

• 6
• 2
• 3
• 7

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

 The GCF of 12 and 30 is _____. 

Mathematical Equivalence

ON

 The GCF of 50 and 40 is _____

Mathematical Equivalence

ON

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

Tags

CCSS.4.OA.B.4

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

Tags

CCSS.4.OA.B.4

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

The greatest factor of 28 and 49 is 7.

• True

• False

GCF of 15 and 35

• 15
• 3
• 7
• 5