A mental arithmetic speed drill. Answer as many questions as you can before time runs out. How to play: type your answer and press nothing — it submits automatically when correct.
Pressing backspace marks a question as trouble, which you can practise later.
Start with the default settings below, or customise the number ranges and duration.
Play
Speed drills with your settings. Results and patterns tracked after each game.
Learn
500 levels from trivially easy to world-record pace. Unlock levels as you go.
Leaderboard
Top scores from players worldwide. Only default settings count.
Operations
✓
Addition
( to
)
+ ( to
)
✓
Subtraction
Addition in reverse.
✓
Multiplication
( to
)
x ( to
)
✓
Division
Multiplication in reverse.
Duration
Options
Time
2:00
Score
0
vs your avg
Final Score
0
0
Correct
0
Trouble
-
Accuracy
Avg. time per correct answer
Question
1/5
Remaining
5
Done
0/0
High scores (default settings only)
Score over time (2-min equivalent)
Accuracy % over time
Avg time per answer (s)
Game log
#
Date
Dur
Score
Acc
Avg time
⏳
No games yet
Play your first game on the Play tab to start tracking your progress. Your scores, accuracy and average time will appear here.
Play more games to see patterns.
Question
1/5
Remaining
5
Practice complete
0/0
No scores yet for this period.
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Levels
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