Load a factor and blast numbered asteroids — a factor that divides splits the rock into a factor pair, and only the prime beam shatters a prime.
Prime Asteroids plays like Asteroids: numbered rocks drift around the ship, and the child loads a factor and fires — a factor that divides splits the rock into a factor pair of their choosing (36 with a 4 makes 4 and 9, with a 6 makes 6 and 6), and only the prime beam shatters a prime, so every wave ends as its prime factorization. A shot that doesn't divide bounces with the remainder (25 ÷ 2 = 12 r 1) and the prime beam bounces off look-alike composites (91 = 7 × 13, 119 = 7 × 17), targeting the belief that odd numbers are prime and the habit of stopping at a composite factor. Best for Grades 5–6.
A free, no-signup, no-ads math game for Grades 5–6 — practising primes, factors, prime-factorization, divisibility. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
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What math does Prime Asteroids practice? Prime Asteroids practices Primes, Factors & Primes, Prime Factorization, Divisibility. Prime Asteroids plays like Asteroids: numbered rocks drift around the ship, and the child loads a factor and fires — a factor that divides splits the rock into a factor pair of their choosing (36 with a 4 makes 4 and 9, with a 6 makes 6 and 6), and only the prime beam shatters a prime, so every wave ends as its prime factorization.
What grade is Prime Asteroids for? Prime Asteroids is built for Grades 5–6 (ages 10–12). It sits in the Arithmetic strand, and it ramps across 8 levels so younger or older players find their own pace.
How do you play Prime Asteroids? Load a factor and blast numbered asteroids — a factor that divides splits the rock into a factor pair, and only the prime beam shatters a prime.
Is Prime Asteroids free to play? Yes. Prime Asteroids is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.