Factors and Greatest Common Factor

What is the prime factorization of 140?

• 4 x 35

• 10 x 14

• 2 x 2 x 5 x 7

• 2 x 70

What is the GCF of 1324 and 465?

• 1

• 4

• 13

• 29

Why is finding the greatest common factor important?

• To multiply numbers faster

• To divide numbers by zero

• To find the largest number

• To solve problems involving packaging and gardening

What is the GCF (Greatest Common Factor) of 12 and 18?

• 3

• 8

• 6

• 4

What is the GCF of 9 and 27?

• 9

• 27

• 3

• 6

What is the GCF of 25 and 40?

• 6

• 2

• 10

• 5

What is the GCF of 84 and 36?

• 12

• 7

• 6

• 4

What is the GCF of 40 and 48?

• 6

• 3

• 5

• 8

What is the GCF of 81 and 135?

• 9

• 5

• 27

• 3

What is the GCF of 25 and 55?

• 15

• 11

• 10

• 5