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Printable math worksheet on prime and composite numbers for Grades 7 and 8, with activities identifying factors and classifying numbers.
Worksheet

Prime and Composite Numbers

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About:

This worksheet gives students in Grades 7–8 practice identifying prime and composite numbers. Activities include finding factors for specific numbers (11, 24, 49, 51), circling composites and underlining primes in a list from 3 to 41, and classifying numbers. Useful for number-theory units, homework, or classwork review.

Subject:
Math
Topic:
Arithmetic
Grade Level:
7th – 8th Grades
Updated February 2026

Word Bank

  • multiply
  • Factors
  • one
  • two
  • composite

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