Prime Factorization and GCF/LCM

What is the greatest common factor of 24 and 36?

• 30

• 12

• 18

• 6

Tags

CCSS.6.NS.B.4

Calculate the least common multiple of 8 and 12.

• 30

• 10

• 16

• 24

Tags

CCSS.6.NS.B.4

What is the greatest common factor of 18 and 27?

• 12

• 6

• 15

• 9

Tags

CCSS.6.NS.B.4

Calculate the least common multiple of 15 and 25.

• 75

• 50

• 100

• 40

Tags

CCSS.6.NS.B.4

Create a factor tree for the number 72.

• 15 x 5

• 6 x 12

• 10 x 7

• 8 x 9

Tags

CCSS.4.OA.B.4

What is the greatest common factor of 42 and 63?

• 35

• 10

• 21

• 14

Tags

CCSS.6.NS.B.4

A composite number ...

• has more than 2 factors.
• has one factor.
• has at least 10 factors.
• is always a really big number.

Tags

CCSS.4.OA.B.4

Which of the following is NOT prime?

• 29

• 23

• 17

• 39

Tags

CCSS.4.OA.B.4

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

Tags

CCSS.4.OA.B.4

Is 12, a prime or composite number? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4