Prime Factorization
A worksheet for grade 4 students on prime factorization, including identifying prime numbers and creating factor trees.
Includes
Standards
Topics
Prime Factorization Worksheet
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show your work where required.
1. Which of the following numbers is a prime number?
9
15
13
21
2. A prime number has exactly how many factors?
One
Two
Three
Many
Fill in the blank with 'prime' or 'composite'.
3. The number 7 is a number.
4. The number 10 is a number.
5. Complete the factor tree for the number 18. Write the prime factorization below.
Prime factorization of 18:
6. Create a factor tree for the number 24 and write its prime factorization.
Prime factorization of 24:
7. The prime factorization of a number is unique.
True
False