Factors, Multiples, and More

Use your divisibility rules to determine which numbers 80 is divisible by...

• 2

• 3

• 4

• 5

• 10

Use your divisibility rules to determine which numbers 42 is divisible by...

• 2

• 3

• 4

• 6

• 12

Select the common factors of 18 and 30.

• 6

• 3

• 1

• 2

• 9

Select the common multiples of 6 and 8

• 1

• 24

• 72

• 2

• 48

Identify the GCF of 12 and 9

• 36

• 1

• 3

• 108

Identify the LCM of 8 and 20

• 4

• 40

• 160

• 1

Eric practices the trumpet every 10th day and the piano every 4th day. Eric practiced both the trumpet and the piano today. How many days until Eric practices the trumpet and piano again on the same day?

Is this a GCF or LCM problem?

• GCF

• LCM

Eric practices the trumpet every 10th day and the piano every 4th day. Eric practiced both the trumpet and the piano today. How many days until Eric practices the trumpet and piano again on the same day?

• 2

• 40

• 20

Charlotte is baking cookies to put in packages for a fundraiser. She has made 84 chocolate chip cookies and 48 sugar cookies. Charlotte wants to create identical packages of cookies to sell, and she must use all of the cookies. What is the greatest number of identical packages that Charlotte can make?

Is this a GCF or LCM problem?

• GCF

• LCM

Charlotte is baking cookies to put in packages for a fundraiser. She has made 84 chocolate chip cookies and 48 sugar cookies. Charlotte wants to create identical packages of cookies to sell, and she must use all of the cookies. What is the greatest number of identical packages that Charlotte can make?

• 4

• 6

• 336

• 12