Exploring Factors and Factor Pairs

What are the factors of 12?

• 1, 2, 3, 4, 6, 12

• 1, 2, 3, 6, 12

• 1, 2, 4, 6, 12

• 1, 3, 4, 6, 12

Which of the following numbers is a factor of 30?

• 7

• 8

• 5

• 9

Find the factor pairs of 24.

• (1, 24), (2, 12), (3, 8), (4, 6)

• (1, 24), (2, 12), (3, 6), (4, 8)

• (1, 24), (2, 8), (3, 6), (4, 6)

• (1, 24), (2, 12), (3, 8), (4, 7)

What is the greatest factor of 18?

• 6

• 9

• 18

• 12

Which of the following numbers is not a factor of 40?

• 5

• 8

• 10

• 9

Determine the factor pairs of 36.

• (1, 36), (2, 18), (3, 12), (4, 9), (6, 6)

• (1, 36), (2, 18), (3, 12), (4, 8), (6, 6)

• (1, 36), (2, 18), (3, 12), (4, 9), (5, 7)

• (1, 36), (2, 18), (3, 12), (4, 10), (6, 6)

What are the factors of 15?

• 1, 2, 3, 5, 15

• 1, 3, 5, 15

• 1, 5, 15

• 1, 3, 15

Which number is a common factor of both 20 and 30?

• 2

• 3

• 4

• 6

Find the factor pairs of 28.

• (1, 28), (2, 14), (4, 7)

• (1, 28), (2, 14), (3, 9)

• (1, 28), (2, 12), (4, 7)

• (1, 28), (3, 14), (4, 7)

What is the smallest factor of 25?

• 1

• 5

• 10

• 25