有向数加减法测验
2020-08-18 16:45
本范例是一个交互式数学测验工具，专用于练习有向数（正负数）的加法与减法运算。系统通过随机函数自动生成有向数运算题目，学生可使用界面虚拟数字键盘（含负号键）输入答案，系统即时判定对错并累计正确与错误次数。支持中英文双语切换，提供提示功能与答题反馈图示，适合初中阶段学生巩固有理数加减法运算能力。
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