# Mental math games and arithmetic challenges

Source: http://localhost:3000/math-games/

NUMO DUEL offers short, timed mental-math rounds using four answer options, configurable difficulty and clear feedback.

## Multiplication

Practice quick number facts such as 6 × 7, 9 × 8 and 15 × 6. Speed helps your score, but avoiding mistakes helps preserve hearts.

## Addition and subtraction

Start with smaller numbers and progress toward larger expressions. These operations work well for solo warmups and head-to-head duels.

## Division and mixed operations

Division uses whole-number answers in the current question generator. Mixed practice switches between arithmetic operations to develop flexible calculation skills.

## Game modes

- Solo Sprint: beat your personal high score.
- Battle AI: take on a computer rival.
- Play with Friends: two-player private online rooms.
- Quick Match: automated online human pairing.

## Devices and online availability

The game works in supported mobile and desktop browsers, with PWA features for installed use. Local practice may work offline after asset caching; real-player matches and leaderboard data require an active backend.

[Play NUMO DUEL](http://localhost:3000/play/index.html) · [How to play](http://localhost:3000/how-to-play/)