Prime Factorization review

A prime number ...

• has only one factor

• has more than two factors

• has only two factors, one and itself

• is always odd

Tags

CCSS.4.OA.B.4

A composite number...

• has more than two factors

• has only two factors

• is always even

• has only one factor

Tags

CCSS.4.OA.B.4

Is 21 a Prime or Composite number?

• Prime

• Composite

Tags

CCSS.4.OA.B.4

How do I tell if a number is divisible by three?

• the last digit is three

• If the sum of the digits is divisible by 3

• If the last two digits is divisible by three

• If the last digit is even

Tags

CCSS.3.OA.D.9

Is 12,346 divisible by 5?

• Yes

• No

Tags

CCSS.4.OA.B.4

What is the Prime factorization of 45?

• 5 x 9

• 2⁴

• 3² x 5

• 2 x 5 x 7

Solve:

6³

^{Be careful...}

• 18

• 216

• 9

• 125

Tags

CCSS.6.EE.A.1

Which number is the base?

9⁴

• 4

• 9

• neither

Tags

CCSS.6.EE.A.1

3⁵ is equivalent to (the same as)

look at all your choices-be careful

• 3x5

• 5x5x5

• 3x3x3x3x3

Tags

CCSS.6.EE.A.1

What is the prime factorization of 36? Use exponents when necessary.

BE CAREFUL- MAKE SURE YOU HAVE ALL PRIME NUMBERS-READ YOUR CHOICES

Tags

CCSS.6.EE.A.1