Prime and Composite

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither

Is 21 prime or composite?

• prime, because is has 2 factors

• composite, because it has 2 factors

• composite, because it has 4 factors

• neither

Is 49 prime or composite?

• prime, because it only has 1 factor

• prime, because it only has 2 factors

• composite, because it has 3 factors

• composite, because it has 4 factors

Is 1 prime or composite?

• prime, because it only has 1 factor

• prime, because it only has 2 factors

• composite, because it has 2 factors

• neither

Is 36 prime or composite?

• prime, because it only has 2 factors

• composite because it has 9 factors

• composite, because it has 8 factors

• composite, because it has 10 factors

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

Which list has ONLY composite numbers?

• 8, 16, 24

• 2, 4, 6

• 5, 10, 15

• 3, 6, 9

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