This download contains two different types of importable Moodle questions to help students practice identifying prime numbers.
The first are cloze questions for filling in the Sieve of Eratosthenes where the size of the grid is 20, 50, 100, and 200.
The second question is a multiple choice question asking if a given number is prime or composite. There are seven importable Moodle (XML) files: prime and composite up to 20, prime and composite up to 50, composite only up to 1,000, composite only up to 10,000, prime only up to 1,000, and prime only up to 10,000.
Having the primes and composites as separate imports allows you to control the number of primes compared to composites by using categories.