一个完整功能的学生四则运算测试软件，可以实现加减乘除运算结果的自动判定，并给出相应的学生成绩。寓教于乐，增效数学教学效果。-A full-featured test software of students four arithmetic operation, which can automatically determine the result of the operation,such as subtraction, multiplication ,division and so on.