Practice arithmetic by combining cards to reach the number 20. Play single player, versus, or quest modes. Track progress and compete against others. Adjust difficulty levels and customize settings. Share high scores and challenge friends.
by Tinkerwise LLC★ 5.021 ratingsEducationFreeData updated 2026-09-06
Practice arithmetic with quizzes covering addition, subtraction, multiplication, and division across varying difficulty levels. Earn rewards by completing challenges and missions.
Learn basic operations through interactive gameplay. Practice addition and multiplication by throwing stones at correct answers. Switch modes and restart the game as needed. Track progress and adjust difficulty settings.