Prime/Composite and Prime Factorization

What is a Prime Number?

• A number that has more than two factors

• An Odd Number

• A number that only has two factors; one and itself.

• An online store with free shipping

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

One is...

• prime

• composite

• not prime or composite

• the loneliest number

Tags

CCSS.4.OA.B.4

What is the prime factorization of 24?

• 1, 2, 3, 4, 6, 8, 12, 24

• 3 x 2 x 2 x 2

• 2 x 3 x 4 x 6 x 8 x 12

• 1 x 2 x 3 x 4 x 6 x 8 x 12 x 24

What is 51 divisible by?

• Nothing, it is prime

• 2

• 3

• 7

Tags

CCSS.4.OA.B.4

Callie made the following array to figure out how many apples she had picked.

Does she have a prime or composite number of apples?

• Prime

• Composite

Tags

CCSS.4.OA.B.4

Which of the following is a prime number?

• 51

• 52

• 53

• 54

Tags

CCSS.4.OA.B.4

Which number is neither prime nor composite?

• 1

• 2

• 3

• 4

Tags

CCSS.4.OA.B.4

Which number is composite?

• 2

• 37

• 43

• 63

Tags

CCSS.4.OA.B.4

1 x 31 is an expression that shows the factors of . . .

• prime number

• composite number

Tags

CCSS.4.OA.B.4