Short enough to do every day
Each run is only 20 problems, so it fits into a break, commute, or daily warm-up.
Mental Math Attack 20Free mental math game
Math Brain Training in Short 20-Question Sessions
Use quick arithmetic time attacks as a simple way to train focus, number sense, and mental calculation speed.
Train speed and focus
Quickly processing numbers helps build mental calculation rhythm and concentration.
Practice without pressure
Practice mode lets you repeat problems freely without adding the result to the rankings.
Start a 20-question mental math challenge
Play instantly in your browser on mobile or desktop.
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