Quiz on HCF and LCM

What is the LCM of 3 and 4?

• 6

• 9

• 12

• 16

What is the HCF of 12 and 18?

• 3

• 6

• 9

• 12

Which pair of numbers has an LCM of 24?

• 4 and 6

• 3 and 8

• 5 and 6

• 2 and 12

What is the smallest common multiple of 5 and 7?

• 12

• 35

• 25

• 70

Which of these numbers is a common factor of 16 and 24?

• 3

• 5

• 8

• 12

The LCM of 2 and 10 is __________.

The HCF of 14 and 21 is __________.

The smallest number that both 4 and 5 divide evenly is __________.

Two numbers that have only 1 as their HCF are called __________ numbers.

The LCM of 6, 8, and 12 is __________.