Mastering LCM and HCF

What is the LCM of 12 and 15?

• 45

• 75

• 30

• 60

Find the HCF of 24 and 36.

• 24

• 18

• 12

• 6

Using prime factorization, determine the LCM of 8 and 14.

• 56

• 48

• 42

• 28

What is the HCF of 48, 60, and 72?

• 36

• 12

• 24

• 6

If the LCM of two numbers is 60 and their HCF is 12, what are the two numbers?

• 20 and 40

• 12 and 60

• 15 and 45

• 12 and 30

List the first five multiples of 9.

• [7, 14, 21, 28, 35]

• [9, 18, 27, 36, 45]

• [10, 20, 30, 40, 50]

• [8, 17, 26, 35, 44]

Identify the factors of 36.

• 7

• 5

• 10

• [1, 2, 3, 4, 6, 9, 12, 18, 36]

A gardener has 24 red flowers and 36 yellow flowers. What is the maximum number of bouquets he can make if each bouquet has the same number of each type of flower?

• 6

• 18

• 12

• 30

Find the LCM of 5, 10, and 15 using prime factorization.

• 30

• 15

• 35

• 25

What is the HCF of 18 and 27?

• 9

• 12

• 18

• 6