A maths race, a maths grid, a countdown clock and maths puzzles — all free in your browser.
60 seconds. Answer as many sums as you can, against a bot or your own best. Four levels from Rookie to Elite.
SpeedA crossword of equations. Fill each blank so every line adds up, using each tile once.
LogicEndless survival. The clock drains all the time and every right answer refills it. How long can you last?
FocusShapes, number sequences, perimeters and find-the-rule riddles. Solve five as fast as you can.
Reasoning