求教几道数学题,1.〔-0.5〕+3又4分之1+2.75+〔-5又2分之1〕2.〔一题多解题〕计算:〔+1〕+〔-2〕+〔+3〕+〔-4〕+***+(+99)+(-100)3.(巧题多解题)计算:2分之一+(3分之1+3分之2)+(4分之一+4分之2+
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![求教几道数学题,1.〔-0.5〕+3又4分之1+2.75+〔-5又2分之1〕2.〔一题多解题〕计算:〔+1〕+〔-2〕+〔+3〕+〔-4〕+***+(+99)+(-100)3.(巧题多解题)计算:2分之一+(3分之1+3分之2)+(4分之一+4分之2+](/uploads/image/z/7069108-4-8.jpg?t=%E6%B1%82%E6%95%99%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2C1.%E3%80%94-0.5%E3%80%95%2B3%E5%8F%884%E5%88%86%E4%B9%8B1%2B2.75%2B%E3%80%94-5%E5%8F%882%E5%88%86%E4%B9%8B1%E3%80%952.%E3%80%94%E4%B8%80%E9%A2%98%E5%A4%9A%E8%A7%A3%E9%A2%98%E3%80%95%E8%AE%A1%E7%AE%97%EF%BC%9A%E3%80%94%2B1%E3%80%95%2B%E3%80%94-2%E3%80%95%2B%E3%80%94%2B3%E3%80%95%2B%E3%80%94-4%E3%80%95%2B%2A%2A%2A%2B%EF%BC%88%2B99%29%2B%28-100%EF%BC%893.%EF%BC%88%E5%B7%A7%E9%A2%98%E5%A4%9A%E8%A7%A3%E9%A2%98%EF%BC%89%E8%AE%A1%E7%AE%97%EF%BC%9A2%E5%88%86%E4%B9%8B%E4%B8%80%2B%EF%BC%883%E5%88%86%E4%B9%8B1%2B3%E5%88%86%E4%B9%8B2%EF%BC%89%2B%EF%BC%884%E5%88%86%E4%B9%8B%E4%B8%80%2B4%E5%88%86%E4%B9%8B2%2B)
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