Prime Composite Word Problems

Four students each wrote down a number between 30 and 40. The list shows the numbers they wrote. Which student wrote down a prime number?

• Elly

• Ulyssess

• Maggie

• Plamer

Tags

CCSS.4.OA.B.4

Brenda said that the number 2 is prime becuase it has only two factors. Carla said that the number 2 is composite because it is even, and all even numbers are composite. Who is correct?

• Brenda is correct

• Carla is correct

• Both of them are correct

• Neither of them is correct

Tags

CCSS.4.OA.B.4

The runners in a race all wore numbers from 20 to 60. The number on Omar's shirt was a prime number. Which of the following could NOT be Omar's number?

• 51

• 29

• 47

• 23

Tags

CCSS.4.OA.B.4

Which number is a prime factor of the composite number 63?

• 1

• 9

• 21

• 7

Tags

CCSS.4.OA.B.4

The number ​ (a)   is the only even prime number because it has ​ (b)  

• 2

• 4

• 1

• exactly two factors

• more than 2 factors

• exactly 1 factor

Tags

CCSS.4.OA.B.4

Determine whether 17 is a prime number.

• Yes, 17 is a composite number.

• Yes, 17 is a prime number.

• No, 17 is a perfect number.

• No, 17 is not a prime number.

Tags

CCSS.4.OA.B.4

The number 11 is​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 2 factors

• more than 2 factors

Tags

CCSS.4.OA.B.4

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair

Tags

CCSS.4.OA.B.4

The number 21 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 1 factor pair

• exactly 1 factor pair

Tags

CCSS.4.OA.B.4

Which of the following is NOT a prime number?

• 17

• 13

• 29

• 27

Tags

CCSS.4.OA.B.4