Prime and Composite Numbers Worksheet
Explore prime and composite numbers with this comprehensive worksheet for 8th graders, featuring identification, classification, and reasoning questions.
Includes
Standards
Topics
Prime and Composite Numbers
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. Which of the following is a prime number?
51
57
61
65
2. All even numbers greater than 2 are:
Prime
Composite
Both prime and composite
Neither prime nor composite
3. A prime number has exactly factors.
4. The number 1 is neither prime nor .
5. A composite number has than two factors.
6. The number 2 is the only even prime number.
True
False
7. All odd numbers are prime numbers.
True
False
8. List all prime numbers between 20 and 40.
9. Explain why 49 is a composite number.
10. On the number line below, circle all the prime numbers and put a square around all the composite numbers between 1 and 10.
Match each number to its correct classification.
11. 13
a. Composite Number
12. 25
b. Prime Number
13. 37
c. Neither Prime nor Composite
14. 1
d. Even Composite Number
Related Worksheets
Binary Number System Worksheet
Explore the binary number system, learn to convert between binary and decimal, and perform basic binary arithmetic.
Properties of Rational Numbers Review
A Grade 8 worksheet covering the properties of rational numbers, including identification, comparison, and operations.
Binary Numbers Worksheet
Explore the world of binary numbers with this worksheet, covering conversion between binary and decimal, and basic binary operations.
Binary Coding Basics
A worksheet to introduce 8th-grade students to the fundamentals of binary coding, including converting between binary and decimal numbers.
Grade 8 Mental Math Workout
A worksheet to practice and improve mental calculation skills for Grade 8 students, focusing on estimation, percentages, and basic operations without a calculator.
Consecutive Integers Worksheet
Explore consecutive integers, their properties, and how to solve problems involving them at a Grade 8 level.