Prime Factorization

What is the prime factorization of 18?

• 9 x 2
• 3 x 2²
• 3² x 2
• 3³

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

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

Find the prime factorization of 75 in exponential form.

• 3 × 5²
• 3² × 5
• 5 × 15
• 3² × 5²

2 x 2 x 2 is the prime factorization of...

• 6
• 12
• 22
• 8

2 x 11 is the prime factorization of

• 6

• 12

• 22

• 8

Is 5, a prime or composite number? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4

530 is divisible by 2 and 5

• True

• False

Tags

CCSS.4.OA.B.4

Is 145 divisible by 5?

• yes

• no

Tags

CCSS.4.OA.B.4

543 is divisible by 5

• True

• False

Tags

CCSS.4.OA.B.4