问下七年级上册数学题有理数加减乘除的速算有点急,我在此先感受大伙了9d
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![问下七年级上册数学题有理数加减乘除的速算有点急,我在此先感受大伙了9d](/uploads/image/z/10198443-3-3.jpg?t=%E9%97%AE%E4%B8%8B%E4%B8%83%E5%B9%B4%E7%BA%A7%E4%B8%8A%E5%86%8C%E6%95%B0%E5%AD%A6%E9%A2%98%E6%9C%89%E7%90%86%E6%95%B0%E5%8A%A0%E5%87%8F%E4%B9%98%E9%99%A4%E7%9A%84%E9%80%9F%E7%AE%97%E6%9C%89%E7%82%B9%E6%80%A5%2C%E6%88%91%E5%9C%A8%E6%AD%A4%E5%85%88%E6%84%9F%E5%8F%97%E5%A4%A7%E4%BC%99%E4%BA%869d)
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