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Worksheet

Primes and Prime Factors

Curated and Reviewed by Lesson Planet

In this primes and prime factors worksheet, 8th graders solve 21 different problems to include identifying each number as prime, composite, or neither prime nor composite and listing all the primes less than 200. Then they complete each of 4 factor trees shown and write the number as the product of prime numbers. Students also determine the GCF and LCM of various number.

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Concepts
hypotheses, theorems, composite numbers, counterexample, proofs, factor trees, factoring, factoring numbers, factors, greatest common factor, least common denominator, least common multiple, natural numbers, quotients, division
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Additional Tags
composite number, counterexample, factor tree, gcf, hypothesis, lcm, natural numbers, perfect number, prime factor, quotient, theorem, math
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Resource Details
Grade
8th
Subjects
Math
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Resource Types
Worksheets
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Audiences
For Teacher Use
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