Mental Math Practice

Choose your operations, number ranges and either a question goal or a timer. Then select "Start practicing". Type the correct answer to move on automatically, with no Enter key needed. At the end, review your time and a useful shortcut. All practice is free, with no account required.

Yes - mobile practice was a top request. You can practice wherever you want (waiting in line, on the bus, etc.).

Repeated practice makes the arithmetic patterns on this page more familiar and gives you immediate answer feedback and a time for each round. Broader problem-solving still depends on the context and the kind of problems you practice.

Recent round summaries are stored on this device, and a free account can keep your newest 50 summaries across devices. The Daily Challenge gives everyone the same ten questions and one official attempt per UTC day. You can choose a nickname and opt into its public board; ordinary practice stays private.

Ordinary practice measures how quickly you reach correct answers and allows retries. Compare rounds with the same settings. The separate 90-second speed test measures first-answer accuracy.