Understanding Factors and Multiples

What is the least common multiple (LCM) of 4 and 6?

• 12

• 10

• 8

• 14

Find the highest common factor (HCF) of 12 and 16.

• 8

• 2

• 4

• 6

List the first five multiples of 7.

• 6, 12, 18, 24, 30

• [7, 14, 21, 28, 35]

• 7, 15, 22, 29, 36

• 5, 10, 15, 20, 25

What is the LCM of 5 and 10?

• 20

• 10

• 15

• 5

Determine the HCF of 18 and 24.

• 12

• 8

• 4

• 6

How many factors does the number 30 have?

• 10

• 12

• 6

• 8

What is the smallest number that is a multiple of both 3 and 5?

• 30

• 10

• 15

• 20

Find the LCM of 8, 12, and 16.

• 24

• 64

• 36

• 48

What is the HCF of 20, 30, and 50?

• 10

• 25

• 15

• 5

If a number is a multiple of 9, what are its possible factors?

• 1, 3, 9, and other factors depending on the multiple of 9.

• 2, 4, 6

• 7, 14, 21

• 5, 10, 15