練習加法，減法，乘法和除法
Practice math tables as a game.
Stars are earned my completing addition, subtraction, multiplication, and division quickly and correctly.
Start with adding ones and work your way through dividing by 12s.
練習加法，減法，乘法和除法
Practice math tables as a game.
Stars are earned my completing addition, subtraction, multiplication, and division quickly and correctly.
Start with adding ones and work your way through dividing by 12s.