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 4–99+ · no download · plays in your browser · 23 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.
Every level of Subtraction
- T1Tiny diffsK · ages 4-5Single-digit subtraction.Play free ▸
- T2Two-digitGrade 1 · 6 yrsSubtract 10–99.Play free ▸
- T3Three at onceGrade 2 · 7 yrsa − b − c with two-digit numbers.Play free ▸
- T4Three-digitGrade 2 · 7 yrsSubtract 100–999.Play free ▸
- T5Massive diffsGrade 4 · 9 yrsa − b − c with 1000–99999 each.Play free ▸
- T6Mega chainOLYMPICSeven 7-digit numbers, mixed + and −.Play free ▸
More math to master
— Quick answers —
Subtraction: the short FAQ
- Is Subtraction free to play?
- Yes. Subtraction is free to play right in your browser — the whole curriculum, no download, no signup. Paid plans later unlock the full fighter roster, every stage and saved progress.
- Who is Subtraction for?
- Anyone from 4 to 99+. 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 Subtraction?
- Nope. Subtraction runs in any browser, on a laptop, tablet or phone.
- Can Subtraction be used in the classroom?
- Absolutely. Teachers run Subtraction with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.