用计算器算简单加减乘除的方法比如算一下几个试题,如何使用简易计算器按键直接算出来:2*3+8*9=?(4+7)*(2+5)=?告诉我按键步聚就可以了.
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![用计算器算简单加减乘除的方法比如算一下几个试题,如何使用简易计算器按键直接算出来:2*3+8*9=?(4+7)*(2+5)=?告诉我按键步聚就可以了.](/uploads/image/z/2768675-59-5.jpg?t=%E7%94%A8%E8%AE%A1%E7%AE%97%E5%99%A8%E7%AE%97%E7%AE%80%E5%8D%95%E5%8A%A0%E5%87%8F%E4%B9%98%E9%99%A4%E7%9A%84%E6%96%B9%E6%B3%95%E6%AF%94%E5%A6%82%E7%AE%97%E4%B8%80%E4%B8%8B%E5%87%A0%E4%B8%AA%E8%AF%95%E9%A2%98%2C%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8%E7%AE%80%E6%98%93%E8%AE%A1%E7%AE%97%E5%99%A8%E6%8C%89%E9%94%AE%E7%9B%B4%E6%8E%A5%E7%AE%97%E5%87%BA%E6%9D%A5%EF%BC%9A2%2A3%2B8%2A9%3D%3F%EF%BC%884%2B7%EF%BC%89%2A%EF%BC%882%2B5%EF%BC%89%3D%3F%E5%91%8A%E8%AF%89%E6%88%91%E6%8C%89%E9%94%AE%E6%AD%A5%E8%81%9A%E5%B0%B1%E5%8F%AF%E4%BB%A5%E4%BA%86.)
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