+ ( to ) + ( to )
× ( to ) × ( to )
− and ÷ use the same ranges in reverse.
Only runs with all four operations and the default ranges count for the all-time board.
or play with friends
All-time best
Each player's best run with all four operations and the default ranges (+ 2–100, × 2–12 by 2–100).
Match record
Recent matches
Learn
Tricks for the problems you'll see in a run. Each one has a 10-problem drill.
Personal bests
Recent runs
Click a run to see where your time went.
Room
Red
Blue
Settings
+ ( to ) + ( to )
× ( to ) × ( to )
− and ÷ use the same ranges in reverse.
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