Hammer a number to cut two glowing ingots into equal bars (a shared factor) or stack them up to meet (a shared multiple).
To find a greatest common factor the child forges a number that cuts both ingots into equal bars with no leftover chip; to find a least common multiple, two multiple-tracks must both land exactly on the chosen height. The tiling makes divisibility and common multiples visible instead of abstract. The game builds GCF, LCM, factors, multiples, and divisibility — distinct from prime factorization. Best for Grades 4–6.
A free, no-signup, no-ads math game for Grades 4–6 — practising gcf, lcm, factors, multiples, divisibility. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
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What math does Factor Forge practice? Factor Forge practices Gcf, Lcm, Factors & Primes, Multiples. To find a greatest common factor the child forges a number that cuts both ingots into equal bars with no leftover chip; to find a least common multiple, two multiple-tracks must both land exactly on the chosen height.
What grade is Factor Forge for? Factor Forge is built for Grades 4–6 (ages 9–12). 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 Factor Forge? Hammer a number to cut two glowing ingots into equal bars (a shared factor) or stack them up to meet (a shared multiple).
Is Factor Forge free to play? Yes. Factor Forge is free, with no ads and no sign-up, and it runs in the browser on a phone, tablet or computer.