分数乘除法简便运算100题有答案2.docx
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分数乘除法简便运算100题有答案2.docx
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分数乘除法简便运算100题有答案2
分数乘除法简便运算100题
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=254+80
=334
/55、
79
79
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79
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6565、.=(—+—)—
79
11
=[65X(丄+丄)]
79
=65-5
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