Prime and Composite Numbers

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

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?

• 2, 3, 4, 5
• 1, 5, 7, 9
• 2, 3, 5, 7
• 2, 4, 6, 8

Tags

CCSS.4.OA.B.4

Which list is only composite numbers?

• 1, 3, 4
• 2, 4, 6
• 4, 6, 8
• 5, 6, 8

Which one is a composite number?

• 37
• 41
• 21
• 29

Tags

CCSS.4.OA.B.4

Which number below is NOT prime?

• 3
• 7
• 9
• 11

Numbers that can be multiplied together to make a product.

• multiples
• sum
• factors
• facts

Tags

CCSS.4.OA.B.4

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither

Which number below is NOT prime?

• 2
• 11
• 13
• 18

Tags

CCSS.4.OA.B.4

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