5th Prime and Composite Review

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

• Elly—35

• Ulysses—39

• Maggie—37

• Palmer—33

Which student wrote down a prime number?

• A Elly

• B Ulysses

• C Maggie

• D Palmer

Tags

CCSS.4.OA.B.4

Which of the following numbers is not a factor of 24?

• 6

• 3

• 8

• 7

Jaylen was told to list all prime numbers between 30 and 50. Jaylen’s list is shown.

31, 37, 41, 47

Which prime number is missing from Jaylen’s list?

• A 49

• B 39

• C 43

• D 33

A composite number has more than _____ factors.

• 3

• 2

• 0

• 4

What is the Least Common Multiple (LCM) for the numbers

8 and 6?

• 16

• 12

• 24

• 14

Tags

CCSS.6.NS.B.4

Which lists all the factors of 15?

• 1, 7, 8, 15

• 1, 15

• 1, 3, 5, 15

• 3, 5, 15

Tags

CCSS.4.OA.B.4

Seth’s homework assignment is to write factor pairs that contain only composite numbers. Seth wrote four factor pairs for the number 132, as shown below.

6 × 22

11 × 12

3 × 44

2 × 66

Which of Seth’s factor pairs contains only composite numbers?

• F 6 × 22

• G 11 × 12

• H 3 × 44

• J 2 × 66

What would be the eighth multiple of the number 7?

• 63

• 49

• 56

• 15

Tags

CCSS.4.NBT.B.5

CCSS.4.OA.B.4

I am a prime number between 30 and 40. Which number could I be?

• 31

• 33

• 36

• 39

Tags

CCSS.4.OA.B.4

Brenda said that the number 2 is prime because 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?

• A Brenda is correct.

• B Carla is correct.

• C Both of them are correct.

• D Neither of them is correct.