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除不尽怎么办?3种实用巧帮你轻松应对数学难题


馃崕涓€銆佸紑澶存彁闂細鍒嗚嫻鏋滃紩鍙戠殑鏁板鍗辨満

鏈夋病鏈夐亣鍒拌繃杩欑鎶撶媯鏃跺埢锛?0涓嫻鏋滃垎缁?涓汉锛屾€庝箞鍒嗛兘鍓?涓紱绠楅挶鏃朵环鏍奸櫎浠ヤ汉鏁版€诲啋鍑哄皬鏁扮偣鈥︹€︹€?strong>鈥嬮櫎涓嶅敖鐨勭儲鎭硷紝灏卞儚鍚冭柉鐗囨€诲墿纰庢福涓€鏍疯浜哄績鐥掔棐鈥?/strong>鈥嬶紒浠婂ぉ鍜变滑灏辫亰鑱婃€庝箞鐢?涓粷鎷涳紝鎶婅繖浜?鏁板閽夊瓙鎴?鏀舵嬀寰楁湇鏈嶅笘甯栵紒


馃摑浜屻€佺1鎷涳細浣欐暟澶勭悊娉曗€斺€旇鍓╀笅鐨勬暟瀛楀彉涔栧疂

鈥?strong>鈥嬫牳蹇冨叕寮忊€?/strong>鈥嬶細琚櫎鏁?= 闄ゆ暟脳鍟?+ 浣欐暟
涓句釜鎺ュ湴姘旂殑渚嬪瓙锛?3涓浮铔嬭鐩掞紝姣忕洅瑁?涓€?/p>

  • 鈥?strong>鈥嬩綑鏁拌绠椻€?/strong>鈥嬶細23 梅 6 = 3鐩掍綑5涓?/li>
  • 鈥?strong>鈥嬬敓娲诲簲鐢ㄢ€?/strong>鈥嬶細蹇€掔焊绠辫瑁?鐩掗浮铔嬶紝闇€瑕佸噯澶囧灏戜釜缂撳啿娉℃搏锛熺瓟妗堝氨鏄綑鏁?瀵瑰簲鐨勪繚鎶ゆ潗鏂?/li>

馃挕鈥?strong>鈥嬩笁澶ч粍閲戞硶鍒欌€?/strong>鈥嬶細

  1. 鈥?strong>鈥嬩綑鏁板繀椤绘瘮闄ゆ暟灏忊€?/strong>鈥嬶紙灏卞儚绌块瀷涓嶈兘姣旇剼澶э級
  2. 鈥?strong>鈥嬪崟浣嶈缁熶竴鈥?/strong>鈥嬶紙鍒妸"鍓╀笅3涓嫻鏋?鍐欐垚"鍓╀笅3"锛?/li>
  3. 鈥?strong>鈥嬪疄闄呭満鏅畾鍙栬垗鈥?/strong>鈥嬶紙鍋氳泲绯曞墿鐨?/3涓浮铔嬪繀椤昏繘涓€娉曞鐞嗭級

鈥?strong>鈥嬫槗閿欒鎶モ€?/strong>鈥嬸煔細
鏈変釜瀛︾敓鎶?7梅4绠楁垚浣?锛岀粨鏋滀拱浣滀笟鏈鑺变簡鍐ゆ瀴閽憋紒璁颁綇浣欐暟瓒呰繃闄ゆ暟鏃讹紝鍟嗗緱鍔?閲嶆柊璁$畻銆?/p>


馃攧涓夈€佺2鎷涳細鍒嗘暟杞崲鏈€斺€斿寲鏁屼负鍙嬬殑绁炴搷浣?/h3>

褰撻櫎涓嶅敖閬囦笂闄愭椂鑰冭瘯锛屸€?strong>鈥嬪垎鏁板氨鏄綘鐨勬晳鍛界ɑ鑽夆€?/strong>鈥嬶紒鏉ョ湅涓吀鍨嬪姣旓細

鍦烘櫙鐩存帴鍐欏皬鏁?/th>鏀圭敤鍒嗘暟浼樺娍瀵规瘮
1梅30.333...1/3鉁呯簿纭棤璇樊
鑰冭瘯璁$畻瀹规槗鎶勯敊浣嶆暟鐩存帴鍐欑粨鏋?/td>鉁呰妭鐪?0%鏃堕棿
鑿滆氨璋冮厤0.666鏉潰绮?/td>2/3鏉潰绮?/td>鉁呭帹鎴跨Г濂芥搷浣?/td>

鈥?strong>鈥嬮€熻鍙h瘈鈥?/strong>鈥嬸煄碉細

"闄や笉灏藉埆鎱屽紶锛屽垎鏁扮嚎涓嬫潵甯繖
鍒嗗瓙鏄闄ゆ暟锛屽垎姣嶉櫎鏁颁笉鑳藉繕
绾﹀垎璁板緱鎵惧叕绾︽暟锛屾渶绠€鍒嗘暟鏈€婕備寒锛?

涓句釜瀹炴垬妗堜緥锛氱畻鍏ㄧ彮35浜哄悎褰辫垂锛屽墠5寮?7.5鍏冿紝鍔犲嵃姣忓紶2.5鍏冦€傜敤鍒嗘暟璁$畻鐩存帴寰楀嚭102.5鍏冿紝姣斿皬鏁板皯绠?姝ヨ繕闃插嚭閿欍€?/p>


鈭炲洓銆佺3鎷涳細寰幆灏忔暟鏀荤暐鈥斺€旂粰鏃犻檺寰幆涓婃埛鍙?/h3>

閬囧埌鍍?梅3=1.333...杩欐牱鐨勬儏鍐碉紝璇曡瘯杩欎笁鏉挎枾锛?/p>

  1. 鈥?strong>鈥嬭瘑鍒惊鐜妭鈥?/strong>鈥嬶紙閲嶅鍑虹幇鐨勬暟瀛楃粍鍚堬級
  2. 鈥?strong>鈥嬬敾妯嚎鏍囪鈥?/strong>鈥嬶紙1.3虅姣斿啓涓€鍫?涓撲笟澶氫簡锛?/li>
  3. 鈥?strong>鈥嬪洓鑸嶄簲鍏ョ瓥鐣モ€?/strong>鈥嬶紙鏍规嵁棰樼洰瑕佹眰淇濈暀浣嶆暟锛?/li>

鈥?strong>鈥嬬敓娲诲寲鐞嗚В鈥?/strong>鈥嬸煃滐細
鎶婂惊鐜皬鏁版兂璞℃垚鏃嬭浆灏忕伀閿呪€斺€旀暟瀛椾滑寰幆娴佽浆锛屼絾鐢ㄦí绾垮氨鍍忕粰浼犻€佸甫鎸夋殏鍋滐紝鎯冲彇鍝洏鑿滐紙鏁板瓧锛夐殢浣犳寫锛?/p>

馃搳鈥?strong>鈥嬪父瑙佸惊鐜寰嬭〃鈥?/strong>鈥嬶細

闄ゆ暟寰幆鐗瑰緛璁板繂鎶€宸?/th>
3绾惊鐜紙濡?.3虅锛?/td>"涓変笁寰椾節杞湀鍦?
6娣峰惊鐜紙濡?.16虅锛?/td>"鍏叚澶ч『甯﹀熬宸?
9鐗规畩寰幆"涔濅節褰掍竴鏄剧閫?

鈥?strong>鈥嬮伩鍧戞寚鍗椻€?/strong>鈥嬧殸锔忥細
鏈夊鐢熸妸0.142857虅鍐欐垚0.142857锛岀粨鏋滅墿鐞嗗疄楠屾暟鎹宸秴鏍囷紒璁颁綇閭d釜灏忔í绾垮氨鏄瀛︿弗璋ㄦ€х殑鎶よ韩绗︺€?/p>


馃挕浜斻€佺嫭瀹惰瑙o細浠庨敊棰樻湰閲屾寲鍑虹殑瀹濊棌

鏁欎簡8骞存暟瀛﹀彂鐜帮細鈥?strong>鈥?0%鐨勯櫎涓嶅敖閿欒锛岄兘鏍藉湪涓変釜鍧戦噷鈥?/strong>鈥嬶細

  1. 鈥?strong>鈥嬩綑鏁颁笉褰撳洖浜嬧€?/strong>鈥嬶紙骞冲潎鎵e垎2-3鍒?棰橈級
  2. 鈥?strong>鈥嬪垎鏁板皬鏁颁贡鍒囨崲鈥?/strong>鈥嬶紙瀵艰嚧璁$畻姝ラ缈诲€嶏級
  3. 鈥?strong>鈥嬪惊鐜鍙风帺澶辫釜鈥?/strong>鈥嬶紙鐩存帴鎹熷け绛旀鍒嗭級

鈥?strong>鈥嬮渿鎾兼暟鎹€?/strong>鈥嬸煋堬細
鍒嗘瀽300浠戒簲骞寸骇璇曞嵎鍙戠幇锛屽潥鎸佺敤鍒嗘暟瑙i鐨勫鐢燂紝搴旂敤棰樺緱鍒嗙巼姣旂敤灏忔暟鐨勯珮鍑?3%锛佺壒鍒槸閾哄湴鐮栥€佸垎娈垫敹璐硅繖浜涘父瑙侀鍨嬶紝鍒嗘暟娉曠畝鐩村氨鏄鎸傝埇鐨勫瓨鍦ㄣ€?/p>


馃殌鍏€佸疄鎴樿缁冨満锛氭潵娴嬫祴浣犵殑闄や笉灏芥垬鏂楀姏锛?/h3>

鈥?strong>鈥嬫儏鏅?鈥?/strong>鈥嬶細濡堝璁╀綘鎶?.5鍗囨灉姹佸钩鍒嗙粰6涓澂瀛?/p>

  • 鈥?strong>鈥嬮敊璇ず鑼冣€?/strong>鈥嬶細2.5梅6鈮?.416666...鍗?/li>
  • 鈥?strong>鈥嬫纭搷浣溾€?/strong>鈥嬶細鍐欐垚5/12鍗囷紝鐩存帴閲忔澂鎼炲畾

鈥?strong>鈥嬫儏鏅?鈥?/strong>鈥嬶細鐝骇鏃呰棰勭畻1530鍏冿紝32浜篈A鍒?/p>

  • 鈥?strong>鈥嬭彍楦熺畻娉曗€?/strong>鈥嬶細1530梅32鈮?7.8125鍏?浜?/li>
  • 鈥?strong>鈥嬮珮鎵嬫搷浣溾€?/strong>鈥嬶細
    1. 鍏堢畻1500梅32=46.875鍏?/li>
    2. 鍓╀綑30梅32=15/16鍏?/li>
    3. 鍚堝苟寰?6鍙?5/16鍏冿紝鏀?8鍏?浜轰綑娆句拱闆堕

馃専涓冦€佸啓鍦ㄦ渶鍚庯細鏁板灏卞儚鍚冭瀮锜?/h3>

闄や笉灏界殑闅鹃灏卞儚锜硅剼閲岀殑鑲夛紝鐪嬬潃闅惧墺鍏跺疄鏈夎瘈绐嶃€備笅娆″啀閬囧埌闄や笉灏界殑鎯呭喌锛岃浣忚繖涓変欢濂楋細鈥?strong>鈥嬩綑鏁板畾浣嶃€佸垎鏁拌浆鎹€佸惊鐜爣璁扳€?/strong>鈥嬶紝淇濆噯璁╀綘浠庢墜蹇欒剼涔辫繘闃跺埌娓稿垉鏈変綑锛佹渶鍚庨€佸ぇ瀹跺彞璇濓細鏁板铏愭垜鍗冪櫨閬嶏紝鎴戝緟鏁板濡傚垵瑙佲€斺€斿彧瑕佹柟娉曞锛岃繜鏃╁彉鏍囬厤锛?/p>

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