Leaderboard
Top finish!
You placed with a time of .
Subtract cleanly and quickly.
Pick a base, solve 10 subtraction targets, and climb the leaderboard.
Speed & accuracy
Correct:
Wrong:
Time
Choose your base number.
Get ready
- = ?
Select the correct difference from the grid.
Leaderboard
No scores yet. Be the first to set one.
Jump to your rank #
Great job!
Base time
Penalty (3s x wrong)
Final score
Pro tip