Prime & Composite Numbers

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither

Tags

CCSS.4.OA.B.4

Is 21 prime or composite?

• prime, because is has 2 factors

• composite, because it has 2 factors

• composite, because it has 4 factors

• neither

Tags

CCSS.4.OA.B.4

What is a prime number?

• a number with ONLY two factors

• a number with LESS THAN two factors

• a number with ONLY one factor

• a number with MORE THAN two factors

Tags

CCSS.4.OA.B.4

What is a composite number?

• a number with ONLY TWO factors

• a number with LESS THAN TWO factors

• a number with MORE THAN TWO factors

• a number with ONLY ONE factor

Tags

CCSS.4.OA.B.4

Which list has ONLY prime numbers?

• 1, 2, 3

• 2, 3, 5

• 2, 3, 4

• 2, 4, 6

Tags

CCSS.4.OA.B.4

What are factors?

• number that are multiplied together

• prime numbers

• composite numbers

• numbers that are added together

Tags

CCSS.4.OA.B.4

7 is a composite number.

• True

• False

Tags

CCSS.4.OA.B.4

15 only has two factors

• True

• False

Tags

CCSS.4.OA.B.4

From the list below, choose ALL of the composite numbers:

• 6

• 11

• 9

• 23

• 24

Tags

CCSS.4.OA.B.4

From the list below, choose ALL of the prime numbers:

• 1

• 2

• 3

• 4

• 5

Tags

CCSS.4.OA.B.4