True or False: free online game
Mental arithmetic under pressure: sums scroll by and you say whether each one is right. Speed and accuracy both count.
Play True or FalseFree, zero ads, no sign-up, on mobile and desktop.
How to play
Sums scroll by: say as fast as you can whether they are right. A mistake costs time.
What this game trains
- Mental arithmetic: calculate in your head, fast and right.
- Processing speed and reflexes: perceive and react as fast as possible.
Levels
Easy · Hard · Expert · Hardcore — each level has its own leaderboard.
Challenge your friends
At the end of a game, send your score as a link: your friend plays exactly the same puzzle and you compare your times. There is also a daily challenge and tournaments.