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在線工具
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加減乘除練習題生成器
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关于
此工具可以随机生成1000以内加减法练习题。
结果及过程，都为非负数。
调试中，欢迎反馈使用意见。
https://itool.co
/zh-hant/addition-and-subtraction
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繼續對所向往的東西保持信念，即使現在沒有，也許永遠得不到。
——尼采
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