Exploring Common Multiples and Factors

What is a multiple of a number?

• A number that is subtracted from another number

• A number that is added to another number

• A product of a number and an integer

• A number that divides another number

Which of the following is a common multiple of 2 and 3?

• 4

• 5

• 6

• 7

On which days do Emma and Tala both work together?

• 12th and 24th

• 18th and 36th

• 10th and 20th

• 15th and 30th

If Emma works every 3 days and Tala works every 5 days, what is the next common workday after the 15th?

• 18th

• 20th

• 25th

• 30th

What is the smallest common multiple of 2 and 8?

• 2

• 4

• 8

• 16

Which of the following is a common multiple of 2 and 8?

• 16

• 12

• 6

• 10

What are the common multiples of 3 and 4?

• 10, 20, 30

• 8, 16, 24

• 12, 24, 36

• 6, 12, 18

What is the least common multiple of 3 and 4?

• 8

• 12

• 6

• 16

Which of the following is both a factor and a multiple of 30?

• 5

• 30

• 10

• 15

What is a factor of a number?

• A number that can be multiplied by another number to get a product

• A product of a number and an integer

• A number that is subtracted from another number

• A number that is added to another number