Basic Algebra Worksheet 5b - Prime & Composite Nos. - The Sieve of Eratosthenes from MathDBase.com on TeachersNotebook.com - (4 pages) - This is the first optional worksheet in the Basic Algebra (Elementary Algebra or Algebra 1) series. It covers a technique to quickly find prime numbers and how to use some time-saving methods to determine if a natural number is prime or composite.
The Sieve of Eratosthenes is a simple, ancient algorithm for finding all prime numbers up to any given limit. The algorithm does so by iteratively marking as composite the multiples of each prime, starting with the multiples of
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