HCF and LCM Skills

Find the highest common factor of 12 and 18.

• 9

• 6

• 4

• 15

Calculate the least common multiple of 8 and 12.

• 16

• 20

• 30

• 24

Identify the prime factorization of 24.

• 2^3 * 3

• 2^4 * 3

• 2^2 * 6

• 2^2 * 12

Solve: John has 15 apples and 20 oranges. What is the least number of fruits he can distribute equally?

• 10

• 7

• 5

• 3

Find the HCF of 36 and 48.

• 6

• 18

• 24

• 12

Calculate the LCM of 6 and 9.

• 12

• 15

• 21

• 18

Identify the prime factorization of 30.

• 2 x 3 x 6

• 3 x 5 x 6

• 2 x 3 x 5

• 2 x 5 x 6

Solve: A garden has 18 rose plants and 24 lily plants. What is the least number of plants that can be arranged in rows?

• 10

• 6

• 12

• 8

Find the highest common factor of 42 and 56.

• 14

• 28

• 35

• 21

Calculate the least common multiple of 5 and 7.

• 42

• 10

• 35

• 25