Prime &Composite Numbers and Divisibility Rules

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4

What are all prime numbers divisible by?

• 1, 2, and itself
• 1 and itself
• Every number from 1-10
• They aren't divisable at all

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

True or False
0 is a COMPOSITE number.

• TRUE
• FALSE

Tags

CCSS.4.OA.B.4

Name the next 3 prime numbers after 23.

• 24, 25, 26
• 29, 30, 31
• 29, 31, 37
• 24, 26, 28

Which of these numbers is not prime?

• 17
• 25
• 23
• 37

Tags

CCSS.4.OA.B.4

Which of the following numbers is not composite?

• 24
• 40
• 66
• 61

Tags

CCSS.4.OA.B.4

Which is the only prime number that is even?

• 14
• 22
• 17
• 2

Tags

CCSS.4.OA.B.4

Number 27 is both ...

• even and composite
• odd and composite
• even and prime
• odd and prime

Tags

CCSS.4.OA.B.4