GCF and LCM Review

What is the least common multiple of 9 and 12?

• 108

• 36

• 12

• 3

Tags

CCSS.6.NS.B.4

Tonya needs to buy red paper plates and napkins for a party. Plates are sold in packages of 10 and napkins are sold in packages of 14. What is the least number of plates and napkins that Tonya can buy so that there is the same amount of plates and napkins?

• 140

• 2

• 70

• 40

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 27 and 45?

• 9

• 3

• 45

• 135

Tags

CCSS.6.NS.B.4

Jamie has 48 notebooks and 36 pencils. He wants to make packages to send to his cousins. Each package must have the same number of notebooks and pencils. What is the greatest number of packages that Jamie could make?

• 4

• 9

• 12

• 2

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 8 and 24?

• 2

• 4

• 6

• 8

Tags

CCSS.6.NS.B.4

Nancy wrote the following steps to find the greatest common factor of 24 and 56.

 

Step 1: List the factors of 56: 1, 2, 4, 7, 14, 28, and 56.

Step 2: List the factors of 24: 1, 2, 3, 4, 6, 8, 12, and 24.

Step 3: List the common factors of 56 and 24: 1, 2, and 4.

Step 4: Find the greatest common factor: 4.

 

Which statement is true?

• Nancy made a mistake. Nancy forgot to include 8 as a factor of 56, so the greatest common factor is 8 not 4.

• Nancy incorrectly listed the multiples instead of factors. The greatest common factor is 88 not 4.

Tags

CCSS.6.NS.B.4

What is the least common multiple of 8 and 16?

• 32

• 48

• 16

• 64

Tags

CCSS.6.NS.B.4

Find the greatest common factor for 24 and 32.

• 1

• 4

• 16

• 8

Tags

CCSS.6.NS.B.4

Find the greatest common factor for 38 and 18.

• 2

• 684

• 1

• 8

Tags

CCSS.6.NS.B.4

Find the greatest common factor of 30 and 15.

• 15

• 3

• 5

• 60

Tags

CCSS.6.NS.B.4