Mental Math Practice
Build speed and accuracy with free, customizable drills. Start with a preset, submit each answer with Enter, and use the result breakdown to choose your next focused practice.
Choose a preset or customize a round
Game Settings
Leave multiple selected to mix modes.
Recent practice
Complete a round to start a private recent-history list on this device.
Focused practice by skill
How to use the practice hub
Warm up before work, rehearse for a quantitative interview, or isolate one operation. Incorrect submissions count, so accuracy and weak-operation recommendations reflect the round you actually did.
Methodology and privacy
Results use submitted answers, elapsed time, and per-operation response times. Anonymous history stays in versioned local storage and is capped at 50 summaries. Signed-in history stores the same bounded summaries in existing account settings. Names, emails, and individual answers are never written to practice history.
Frequently Asked Questions
Pick the arithmetic operations you want to practice, set the number ranges, and choose how many questions you want. Hit "Play" and solve problems one at a time. It's great for sharpening mental math skills (and preparing for interviews or assessments). Practice regularly and push yourself!
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 accuracy and timing feedback. Broader problem-solving still depends on the context and the kind of problems you practice.
Recent round summaries are stored on this device, and signed-in users can sync those summaries to their account. The history is intentionally bounded to the newest 50 rounds.
Maybe. Right now we're focused on the fundamentals. If you have suggestions, let us know!