小学生加减法的算术练习程序 小学生可以用它检测自己的学习效果-Primary and secondary school students to practice addition and subtraction arithmetic procedures

自动出题100以内的加减法混合运算，给那些要给孩子出题的家长提供方便，快捷键为Ctrl+L-Auto title addition and subtraction within 100 mixed operations, to those who give the child a question for the convenience of parents, the shortcut is Ctrl+ L