Whole Numbers Session 5

Find the HCF of 24 and 36.

• 30

• 12

• 18

• 6

Find the LCM of 8 and 12.

• 24

• 30

• 16

• 20

Using prime factorization, find the HCF of 18 and 24.

• 6

• 12

• 9

• 3

Using prime factorization, find the LCM of 15 and 25.

• 75

• 60

• 45

• 100

Calculate the HCF of 42 and 56.

• 14

• 24

• 18

• 10

Determine the HCF of 30 and 45 using the division method.

• 25

• 10

• 20

• 15

Determine the LCM of 20 and 28 using the prime factorization method.

• 140

• 120

• 175

• 210

What is the HCF of 72 and 108?

• 36

• 24

• 45

• 60

Find the HCF of 54 and 90 using the prime factorization method.

• 36

• 27

• 45

• 18

Find the LCM of 10 and 15 using the division method.

• 25

• 30

• 20

• 35