Word Problems with Prime & Composite Numbers for Grade 4

2. A garden has 15 flowers. If each flower has 5 petals, how many petals are there in total? Explain if 15 is a prime or composite number.

• 75 petals; 15 is a composite number.

• 50 petals; 15 is neither prime nor composite.

• 75 petals; 15 is a prime number.

• 60 petals; 15 is a prime number.

Tags

CCSS.4.OA.B.4

3. Tom is building a fence around his rectangular garden. The length is 9 feet and the width is 4 feet. What is the perimeter of the garden? Is 9 a prime or composite number?

• The perimeter of the garden is 30 feet. The number 9 is neither prime nor composite.

• The perimeter of the garden is 20 feet. The number 9 is prime.

• The perimeter of the garden is 25 feet. The number 9 is a perfect square.

• The perimeter of the garden is 26 feet. The number 9 is composite.

4. Lisa has 18 candies. She wants to divide them into groups of 6. How many groups can she make? Is 18 a prime or composite number?

• Lisa can make 2 groups. 18 is a prime number.

• Lisa can make 4 groups. 18 is a composite number.

• Lisa can make 3 groups. 18 is a prime number.

• Lisa can make 3 groups. 18 is a composite number.

Tags

CCSS.4.OA.B.4

5. A box contains 20 toys. If each child receives 4 toys, how many children can receive toys? Explain if 20 is a prime or composite number.

• 4 children can receive toys.

• 6 children can receive toys.

• 5 children can receive toys.

• 10 children can receive toys.

Tags

CCSS.4.OA.B.4

6. There are 24 students in a class. If they are divided into groups of 8, how many groups will there be? Is 24 a prime or composite number?

• 3 groups; 24 is a prime number.

• 4 groups; 24 is a prime number.

• 2 groups; 24 is a prime number.

• 3 groups; 24 is a composite number.

Tags

CCSS.4.OA.B.4

7. Mark has 30 marbles. He wants to put them into bags with 5 marbles each. How many bags will he need? Is 30 a prime or composite number?

• Mark needs 5 bags.

• Mark needs 7 bags.

• Mark needs 6 bags. 30 is a composite number.

• 30 is a prime number.

Tags

CCSS.4.OA.B.4

8. A pizza is cut into 16 slices. If 4 friends share the pizza equally, how many slices will each friend get? Is 16 a prime or composite number?

• Each friend gets 4 slices; 16 is a composite number.

• Each friend gets 5 slices; 16 is neither prime nor composite.

• Each friend gets 2 slices; 16 is a prime number.

• Each friend gets 3 slices; 16 is an even number.

Tags

CCSS.4.OA.B.4

9. Emma has 10 stickers. She wants to give them to her 5 friends equally. How many stickers will each friend get? Is 10 a prime or composite number?

• 10 is a prime number.

• Each friend gets 2 stickers. 10 is a composite number.

• Each friend gets 3 stickers.

• Each friend gets 1 sticker.

Tags

CCSS.4.OA.B.4

10. A farmer has 28 eggs. He wants to pack them into cartons of 7. How many cartons will he fill? Explain if 28 is a prime or composite number.

• 5

• 3

• 6

• 4

Tags

CCSS.4.OA.B.4