Factors Multiples and Prime and Lcm and Gcf

Find the greatest common factor of 20 and 30

• 2

• 5

• 10

• 15

Which number is a factor of 24

• 9

• 7

• 11

• 12

Tags

CCSS.4.OA.B.4

A prime number is...

• a number that has only one factor.

• a number that has at least two factors.

• a number that has more than two factors.

• a number that has only two factors.
  (1 and itself)

Tags

CCSS.4.OA.B.4

What is the GCF of 8 and 10?

• 1

• 3

• 4

• 2

Find the prime factorization of 60.

• 2 x 2 x 2 x 3

• 2 x 2 x 3 x 5

• 2 x 2 x 2 x 2 x 2

• 2 x 3 x 3 x 5

Which is the CORRECT prime factorization of 18?

• 2 x 9

• 3 x 6

• 2 x 3²

• 2⁹

Find the prime factorization of 72

• 2³ x 3²

• 2 x 3² x 4

• 2⁴ x 3³

• 2² x 6²

What is the prime factorization of 24?

• 3 x 8

• 3 x 2 x 2 x 2

• 4 x 6

• 2 x 2 x 3

What is the prime factorization of 100,000?

• 2 x 5 x 0

• 2 ^ 5 x 5 ^ 2

• 2 ^ 5 x 5 ^ 5

• 2 x 3 x 4 x 5

Find the prime factorization of 36.

• 2^4 * 3^2

• 2^2 * 3^2

• 2^3 * 3^2

• 2^2 * 3^3