Which is more? A second to decide.
An expression on top, a plain number below. There is rarely time to work it out exactly, so you learn to see which side is bigger.
Every level states what it contains and shows five real examples before you start. Level four brings multiplication; level five brings brackets and negative numbers.
Classic counts your correct answers in a minute. Race pays you time for being right and charges you for being wrong. Duel puts two players on one phone.
No account, no network, no ads. Sixteen languages, light and dark, and everything you score stays on your phone.