Math practice · reimagined
Subtraction
Turn Subtraction 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
How it works
Subtraction
Pick a fighter, choose Subtraction, 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.
Subtracting means taking some away and seeing what's left.
You have 5 cookies and you eat 2. How many are left? Take away 2 — 5, 4, 3 — you have 3 left. So 5 − 2 = 3.
Start at the big number and count backwards as many steps as the small number. Type what's left.
— Quick answers —
Subtraction: the short FAQ
- Is the Subtraction free to play?
- Yes. The Subtraction 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 Subtraction 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 Subtraction?
- Nope. The Subtraction runs in any browser, and there's a mobile app on the same account if you'd rather train on your phone.
- Can the Subtraction be used in the classroom?
- Absolutely. Teachers run the Subtraction with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.