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有理數練習練習一(B級)(一)計算題:(1)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(二)用簡便方法計算:(1)(-17/4)+(-10/3)…
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