What you'll practise
Number Ninja is a free drill for reading numbers in Slovak. Each round shows a number written out in words and you type the digits before the timer runs out. Numbers are what learners freeze on in shops and at stations, and the only cure is reading them faster than you can translate.
How to play
- Read the number written out in words.
- Type the digits it stands for.
- Answer before the timer runs out.
ControlsType your answer on a keyboard, or use your device's on-screen keyboard.
Frequently Asked Questions
Is Number Ninja free to play?
Yes. Number Ninja is completely free to play on lingoXpress, with no signup, no ads-only paywall, and unlimited rounds.
Do I need to sign up to play Number Ninja?
No sign-up is required. You can start playing Number Ninja in Slovak instantly. Optional accounts let you save progress and high scores.
Can I play Number Ninja on mobile?
Number Ninja works on desktop, tablet and mobile browsers — no app install required. Touch controls and keyboard are both supported.
How does Number Ninja help me learn Slovak?
Number Ninja reinforces Slovak vocabulary through active recall and repetition, so words stick faster than passive review. Play short daily sessions for the best results.