Math practice · reimagined

Square root

Turn Square root into a fight you actually want to win. Every problem is an attack — solve it faster than your opponent and you land the hit.

Ages 7–70 · no download · plays in your browser · 20 languages

Play Square root free ▸

How it works

Square root

Pick a fighter, choose Square root, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.

A square root runs squaring backwards. It asks: "what number times itself gives this?"

√49 = 7 because 7 × 7 = 49. √144 = 12 because 12 × 12 = 144. If you know your squares, you know your roots — they're the same facts read the other way.

These all come out to whole numbers. Type the root.

More math to master

— Quick answers —

Square root: the short FAQ

Is the Square root free to play?: Yes. The Square root is free to start right in your browser — no download, no signup. Paid plans later unlock the full fighter roster and the deeper curriculum.
Who is the Square root for?: Anyone from 7 to 70. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.
Do I need to download anything to play the Square root?: Nope. The Square root runs in any browser, and there's a mobile app on the same account if you'd rather train on your phone.
Can the Square root be used in the classroom?: Absolutely. Teachers run the Square root with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.

Ready to throw down?

Play free ▸

Square root

Pick a fighter, choose Square root, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.

A square root runs squaring backwards. It asks: "what number times itself gives this?"

√49 = 7 because 7 × 7 = 49. √144 = 12 because 12 × 12 = 144. If you know your squares, you know your roots — they're the same facts read the other way.

These all come out to whole numbers. Type the root.

Square root: the short FAQ

Is the Square root free to play?

Yes. The Square root is free to start right in your browser — no download, no signup. Paid plans later unlock the full fighter roster and the deeper curriculum.

Who is the Square root for?

Anyone from 7 to 70. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.

Do I need to download anything to play the Square root?

Nope. The Square root runs in any browser, and there's a mobile app on the same account if you'd rather train on your phone.

Can the Square root be used in the classroom?

Absolutely. Teachers run the Square root with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.