Countdown Challenge: Prime & Composite Numbers: Sieve of Eratosthenes

In this prime and composite activity, students use the Sieve of Eratosthenes to identify prime numbers. They identify given factors in a list. This one-page activity contains a list of 100 numbers. Following a given process, students identify 25 prime numbers.

7th - 8th Math 7 Views 24 Downloads
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