ABACOTRON
Combine two cards with + − × ÷. The result becomes a new card. Reach the target before UNIT-3.
Keys: 1–6 pick a card · + − * / · Backspace undo · Esc clear
Combine two cards with + − × ÷. The result becomes a new card. Reach the target before UNIT-3.
Abacotron is a free daily arithmetic duel in your browser. Every day at 00:00 New York time an old counting machine deals five rounds: six number cards and a target. Combine the cards with + − × ÷ to hit the target before the machine does. Everyone gets the same rounds, so you can compare results with friends and share them without spoilers.