1.4 - 1.6

Which of the following is a factor pair for 28?

• 2 and 28

• 28 and 56

• 2 and 19

• 4 and 7

Which of the following is a factor pair of 63?

• 3 and 12

• 3 and 21

• 2 and 63

• 2 and 33

Is 504 divisible by 3?

• yes

• no

Which of the following is the prime factorization of 66

• 6 x 11

• 3 x 2 x 11

• 1 x 66

• 2 x 3 x 11

Which of the following is the prime factorization of 50 in simplest form?

• 5 x 2

• 2 x 5 x 5

• 2² x 5

• 2 x 5²

A prime number always has more than one factor pair.

• True

• False

What is the GCF of 24 and 90?

• 3

• 6

• 12

• 9

What is the GCF of 32, 56, and 96?

• 8

• 4

• 3

• 6

What is the GCF of 28, 48, and 64?

• 2

• 24

• 4

• 6

12 is a multiple of 24

• True

• False