prime and composite

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 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

Which number is prime?

• 9
• 5
• 0
• 1

Tags

CCSS.4.OA.B.4

Which is a prime number?

• 15
• 17
• 21
• 39

Tags

CCSS.4.OA.B.4

Which number is NOT prime?

• 3
• 7
• 17
• 21

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

Besides 15 and 1, what is one factor of 15?

• 2
• 4
• 6
• 3

Tags

CCSS.4.OA.B.4

Which of the following is NOT true about prime numbers? 

• They have exactly two factors 
• 1 is a factor of every prime number
• No prime numbers end in zero
• All prime numbers are odd numbers.  

Tags

CCSS.4.OA.B.4