Math practice · reimagined
Inequalities
Turn Inequalities 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
Inequalities
Pick a fighter, choose Inequalities, 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.
An equation asks which number makes both sides equal. An inequality asks which numbers make one side SMALLER than the other — and usually there are infinitely many of them.
You solve it exactly like an equation: to get x on its own in 6x < 47, divide both sides by 6, giving x < 7.83…
So every number below 7.83 works — 7 works, 6 works, 0 works, −100 works. But there is a largest WHOLE number that works, and that is 7. Eight is already too big, because 6 × 8 = 48, which is past 47.
A good way to check: multiply your answer back by the coefficient and make sure it lands under the limit, then check that one more would overshoot.
One warning for later: if you ever divide an inequality by a NEGATIVE number, the sign flips direction. That does not happen here, but it is the rule that catches everyone.
Divide, then type the largest whole number that still fits.
Every level of Inequalities
— Quick answers —
Inequalities: the short FAQ
- Is Inequalities free to play?
- Yes. Inequalities 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 Inequalities 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 Inequalities?
- Nope. Inequalities runs in any browser, on a laptop, tablet or phone.
- Can Inequalities be used in the classroom?
- Absolutely. Teachers run Inequalities with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.