Prime Factorization

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

Write 28 as a product of its prime factors.

• 2x2x7
• 4x7

Write 54 as a product of its prime factors.

• 2x2x3x3
• 2x3x3x3
• 2x3x9
• 6x9

What is the greatest common factor of 6 and 21?

• 6
• 2
• 3
• 7

Tags

CCSS.6.NS.B.4

20 x 2 - (10 - 4)

• 22
• 30
• 34

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Solve:
(32 ÷ 8) + 27 - 11

• 10
• 20
• 30

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What is the least common multiple (LCM) of 15 and 2?

• 30
• 2
• 45
• 152

Tags

CCSS.6.NS.B.4

Use a number tree to find the prime factorization of 60

• 5 x 3 x 2 x 2

• 7 x 6 x 5

Use a number tree to find the prime factorization of 42

• 4 x 4 x 3

• 7 x 3 x 2