Prime Factorization

What are the prime factors of 27?

• 3x3x3

• 3x2x3

• 3x3x4

Tags

CCSS.4.OA.B.4

Find the prime factorization of 38.

• 38 = 2 x 19

• 38 = 5 x 6 x 8

• 38 = 5 x 6 x 6

Tags

CCSS.4.OA.B.4

What is the highest common factor of 15 and 36?

• 6

• 8

• 4

• 3

Find the Highest  Common Factor (HCF) of 14 & 22.

• 1
• 2
• 7
• 14

What is the prime factorization of 20 written in exponential notation?

• 2 x 5
• 1 x 20
• 2 x 10
• 2² x 5

Tags

CCSS.4.OA.B.4

What is the prime factorization of 48 written in expanded notation?

• 4x2x6
• 4x2x2x3
• 2x2x2x2x3

• 12x4

Tags

CCSS.4.OA.B.4

If the expanded form is 2⋅2⋅2⋅3⋅3⋅5⋅7 what would the exponential form be?

• 2⋅3⋅5⋅7
• 2³⋅3²⋅5⋅7
• 2²⋅3²⋅5⋅7
• 8⋅9⋅35

Tags

CCSS.6.EE.A.1

Is 5 prime or composite? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4

The Lowest Common Multiple (LCM) of 6, 8 and 10?

• 120

• 60

• 72

• 84

Joe has listed the first 4 multiples of 7 as:

7, 14 , 22, 28

Which one is incorrect?

• 7

• 14

• 22

• 28