Sieve of Eratosthenes - Prime Numbers Worksheet

Sieve of Eratosthenes is a Greek Math’s classic. This is an engaging way for students to find Prime Numbers using multiples of numbers. This version I made goes up to 100 and takes about 10 -20 minutes depending on your class.

The** answers** are on the second sheet for quick reference.

If you are looking to inject excitement and movement into your maths class. Optionally, the Sieve worksheet forms the pre-learning for the maths game Decrypto Racer, on my resources tab.

Decrypto is a high speed composite number game where students race to break the numbers down into prime factors. Running for 20 - 40 minute one of my students called it ‘Exciting and Stressful!’.

Also check out my other games …
Decrypto Racer
Scale Stacker

Enjoy and please please send me your feedback, love it or hate I’d love to know!

Mr Boggers