数学考试提分指南:百分数解题方法及常见错误解析
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鍛介棬1锛氭壘鍑?鍗曚綅1"锛堝氨璺熸壘瀵硅薄涓€鏍烽噸瑕侊紒锛?/h3>
涓句釜鏍楀瓙馃尠锛?br/>
"澶х背娑ㄤ环20%鍚庢瘡鏂?鍏冿紝鍘熶环澶氬皯锛?
鈥?strong>鈥嬫纭墦寮€鏂瑰紡鈥?/strong>鈥嬶細
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锛堣繖閲?鍗曚綅1"鏄師浠凤紝寰堝浜洪敊鎶婄幇浠峰綋鍩哄噯锛?/p>
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瀵规瘮棰樼粍锛?br/>
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鈶?A鍗燘鐨?0% 鈫?鍚屸憼
锛堣€冨満鏉€鎵嬮攺锛氱湅鍒?姣?瀛楃珛鍒荤粰鍩烘暟鍔?锛?/p>
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鈥?strong>鈥嬫暟瀛︾湡鐩糕€?/strong>鈥嬶細
100鍏冣啋110鍏冣啋99鍏冿紙鍙嶈€屼簭1鍏冿級
锛堣繖閲岃棌鐫€涓瓟楝煎叕寮忥細1.1脳0.9=0.99锛?/p>
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棰樼洰锛?0kg澧炲姞50%鍚庡噺灏?0%锛岀粨鏋滃灏戯紵
A.25kg B.37.5kg C.50kg
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锛堣繖绫婚涓撳潙鐩磋鍏氾級
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鐪嬪埌杩欎簺璇嶇洿鎺ュ垝绾挎爣璁帮細
鈻讹笍"鎻愰珮鍒?鈫掔洿鎺ヤ箻
鈻讹笍"澧炲姞浜?鈫掍箻锛?+%锛?br/>
鈻讹笍"鑺傜害浜?鈫掍箻锛?-%锛?br/>
姣斿锛?br/>
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鈿狅笍 琛€娉暀璁帓琛屾锛堝墠3鍚嶉敊棰樺疄褰曪級
鍐犲啗閿欓锛氱洂姘存祿搴﹂棶棰?/h3>
鍏稿瀷閿欒锛?br/>
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閿欒В锛氾紙200脳15%锛壝?00=10%
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锛堣繖绉嶉涓撴潃鐪肩瀻涓嶇湅鎬婚噺鐨勶級
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闂細3鏈堥攢閲忥紵
韪╁潙绛旀锛?00脳1.2脳1.3=156鍙?br/>
姝g‘绛旀锛?00脳锛?+30%锛?130鍙?br/>
锛?姣?鏈?涓変釜瀛楄鍒掗噸鐐癸紒锛?/p>
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馃搳 鐙鑰冨満鏁版嵁
鏌愰噸鐐逛腑瀛︾粺璁″彂鐜帮細
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涓嬫鍋氶鍓嶈浣忚繖涓彛璇€锛?br/>
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