Prime & Composite Numbers

All of these are prime except

• 3
• 9
• 2
• 13

Tags

CCSS.4.OA.B.4

One is

• prime

• composite

• not prime or composite

Is 64 Prime or Composite?

• Prime

• Composite

Tags

CCSS.4.OA.B.4

Is 100 Prime or Composite?

• Prime

• Composite

Tags

CCSS.4.OA.B.4

All the following numbers are prime except

• 11

• 16

• 23

• 41

the only factors prime numbers have are:

• 0 and 1
• 0 and itself
• 1 and itself
• 1

Tags

CCSS.4.OA.B.4

Which is a prime number?

• 15
• 17
• 21
• 39

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

Tags

CCSS.4.OA.B.4

A prime number is...

• a number that has only one factor.

• a number that has at least two factors.

• a number that has more than two factors.

• a number that has only two factors 1 and itself.