FAQ

Digital PDF on Gumroad. Kindle, paperback and hardcover on Amazon. Availability varies by title — the buy buttons on each book page show what exists.

Yes. These are the first complete and faithful English translations directly from the original Russian editions. Not adaptations or rewrites.

Completely. Every section, every problem, every proof is verified against the original Russian edition. All independently checked by mathematicians.

Many earlier translations were abridged, adapted, or based on later simplified editions. This is the complete original Kiselev translation unchanged.

Typically grades 3–6, roughly ages 9–12. But the book adapts well to students of all ages. Adults find it challenging and rewarding too.

Yes, for the grades it's designed for. It's self-contained. Some families supplement with extra problem sets, but Kiselev alone is sufficient.

Kiselev builds deep conceptual understanding, which is the foundation of all testing. Students who understand deeply typically excel on tests too, but it's not the primary focus.

Gumroad (valeman.gumroad.com) and Amazon. All links are on our Books page.

Gumroad offers refunds within 30 days. Amazon also has standard refund policies. Read terms on each platform.

Yes. Email support@russianmathbooks.com with questions about the content or technical problems.

We're exploring Spanish and Portuguese translations. Contact us if there's interest in your region. Spanish-speaking markets are a priority.

The digital PDF works in any time zone. Users in 100+ countries currently use our books. No geographic restrictions.