上面写不下看下面吧!计算:(1) 1+2-3-4+5+6-7-8+...+1997+1998-1999-2000+2001;(2) 3分之4.29×429429-4.27×429429-2304.26;(3) 10-10.5÷ 中括号5.2×14.6-(9.2×5.2+5.4×3.7-4.6×1.5)中括号;(4) 1+2分之1+1+2+3
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![上面写不下看下面吧!计算:(1) 1+2-3-4+5+6-7-8+...+1997+1998-1999-2000+2001;(2) 3分之4.29×429429-4.27×429429-2304.26;(3) 10-10.5÷ 中括号5.2×14.6-(9.2×5.2+5.4×3.7-4.6×1.5)中括号;(4) 1+2分之1+1+2+3](/uploads/image/z/15076409-41-9.jpg?t=%E4%B8%8A%E9%9D%A2%E5%86%99%E4%B8%8D%E4%B8%8B%E7%9C%8B%E4%B8%8B%E9%9D%A2%E5%90%A7%21%E8%AE%A1%E7%AE%97%EF%BC%9A%281%29+1%2B2%EF%BC%8D3%EF%BC%8D4%2B5%2B6%EF%BC%8D7%EF%BC%8D8%2B...%2B1997%2B1998%EF%BC%8D1999%EF%BC%8D2000%2B2001%EF%BC%9B%282%29+3%E5%88%86%E4%B9%8B4.29%C3%97429429%EF%BC%8D4.27%C3%97429429%EF%BC%8D2304.26%EF%BC%9B%283%29+10%EF%BC%8D10.5%C3%B7+%E4%B8%AD%E6%8B%AC%E5%8F%B75.2%C3%9714.6%EF%BC%8D%289.2%C3%975.2%2B5.4%C3%973.7%EF%BC%8D4.6%C3%971.5%29%E4%B8%AD%E6%8B%AC%E5%8F%B7%EF%BC%9B%284%29+1%2B2%E5%88%86%E4%B9%8B1%2B1%2B2%2B3)
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