prime and composite numbers

Jorge wants to identify a PRIME NUMBER from a list of numbers. He knows that 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)

Tags

CCSS.4.OA.B.4

When we skip count, we are listing .....

• factors
• divisors 
• addition 
• multiples

Tags

CCSS.4.OA.B.4

Find all of the MULTIPLES of 8.

Groups:

(a) Multiples of 8

,

(b) NOT multiples of 8

• 63

• 80

• 25

• 16

• 12

• 8

• 87

• 96

• 1

• 32

Sofia is learning about prime and composite numbers in her math class. Her teacher asked her to identify the composite number from the following options. Can you help Sofia?

• 2

• 37

• 41

• 4

Tags

CCSS.4.OA.B.4

Which of the following lists ALL of the factors of a COMPOSITE number?

• 1, 29

• 1, 2, 3, 6, 9, 12

• 1, 2, 4, 8, 16, 32

• 1, 89

Tags

CCSS.4.OA.B.4

29 is (a)  

• Prime
• Composite
• Neither

Tags

CCSS.4.OA.B.4

Jayden found a treasure chest with numbers written on it. He believes that the key to open it is a prime number. Which of these could be the key?

• 15

• 17

• 21

• 39

Tags

CCSS.4.OA.B.4

Which number is NOT a factor of 10?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

Which number is the only even prime number?

• 0
• 2
• 1
• 3

Tags

CCSS.4.OA.B.4

Which number is a factor of 36?

• 7
• 9
• 10
• 5

Tags

CCSS.4.OA.B.4