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简便运算. (1)5.5×1+125%+1÷ (2)1+3+5+7+…+97+99 (3)100﹣98+96﹣94+92﹣90+…+8﹣6+4﹣2 (4)654321×123456﹣65432...
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教案备课库《2016-2017学年新人教版六年级(上)月考数学试卷(34)》真题及答案
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