LCM and GCF Quiz

What is the prime factorization of 24?

• 2 x 2 x 2 x 5

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2

• 2 x 2 x 3 x 3

Find the least common multiple (LCM) of 8 and 12.

• 10

• 24

• 20

• 16

Calculate the greatest common factor (GCF) of 18 and 24.

• 2

• 8

• 12

• 6

Which number is divisible by both 3 and 5: 15, 20, or 25?

• 15

• 30

• 18

• 10

Tags

CCSS.4.OA.B.4

Draw a prime factor tree for the number 36.

• 2, 2, 3, 3

• 2, 2, 2, 3

• 3, 3, 3, 3

• 2, 2, 2, 2

What is the prime factorization of 48?

• 2 x 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 5

• 2 x 2 x 2 x 2 x 4

• 2 x 2 x 2 x 3 x 3

Find the least common multiple (LCM) of 10 and 15.

• 30

• 35

• 25

• 20

Calculate the greatest common factor (GCF) of 36 and 48.

• 12

• 24

• 18

• 6

Which number is divisible by both 2 and 7: 14, 21, or 28?

• 7

• 35

• 14

• 42

Tags

CCSS.4.OA.B.4

Draw a prime factor tree for the number 72.

• 2 -> 2 -> 2 -> 3 -> 3

• 2 -> 2 -> 2 -> 2 -> 2 -> 2

• 2 -> 2 -> 2 -> 2 -> 2

• 2 -> 2 -> 2 -> 2 -> 3

Tags

CCSS.4.OA.C.5