几道六年级的奥数题,高手进来帮帮我。分数不是问题! 数学题,分数不是问题
\u516d\u5e74\u7ea7\u5965\u6570\u9898\u554a\uff0c\u5e2e\u5e2e\u6211\uff011\u3001
\u8fd9\u4e9b\u7ea6\u6570\u6700\u5c0f\u662f\uff1a
10\u30011\u30012\u30013\u30014\u30015\u30016\u30017\u30018\u30019
\u5373\u6c42\u8fd9\u4e9b\u6570\u7684\u6700\u5c0f\u516c\u500d\u6570\u5373\u53ef\u3002
\u53ea\u9700\u6c42
7\u30018\u30019\u300110\u7684\u6700\u5c0f\u516c\u500d\u6570\uff0c\u53737\u00d78\u00d79\u00d75 = 2520
N \u6700\u5c0f\u662f2520
2\u3001
2003\uff01\u00f7143^N \u4f59\u6570\u4e3a0
143 = 11\u00d713
\u5c31\u9700\u8981\u6c42\u5f971\u52302003\u4e2d\u56e0\u657011\u300113\u51fa\u73b0\u7684\u603b\u6b21\u6570\u7684\u8f83\u5c0f\u8005\u3002
\u6613\u77e5\uff0c\u56e0\u657013\u51fa\u73b0\u7684\u6b21\u6570\u5c11\u4e8e\u56e0\u657011\u7684\uff0c\u53ea\u9700\u8981\u6c421\u52302003\u4e2d\u56e0\u657013\u51fa\u73b0\u7684\u6b21\u6570\u3002
13*13*13 = 2197 > 2003\uff0c\u63a8\u5f97\u8fd9\u4e9b\u6570\u4e2d\uff0c\u6ca1\u6709\u54ea\u4e00\u4e2a\u6570\u542b3\u4e2a\u6216\u4ee5\u4e0a\u7684\u56e0\u657013\u3002
2003/13 = 154 \u4f591\uff0c\u80fd\u88ab13\u6574\u9664\u7684\u6570\u5171154\u4e2a\u3002
2003/\uff0813*13\uff09 = 11 \u4f59144\uff0c\u80fd\u88ab169\u6574\u9664\u7684\u6570\u517111\u4e2a\u3002
\u56e0\u6b64\uff0c1\u52302003\u4e2d\u56e0\u657013\u7684\u4e2a\u6570\u6709\uff1a
\uff08154 - 11\uff09*1 + 11*2 = 165 \u4e2a\u3002
\u56e0\u6b64\u6700\u5927\u4e3a 143\u7684165\u6b21\u65b9\uff0c\u80fd\u6574\u96642003\uff01
3\u3001\u4f60\u5199\u7684\u54ea\u4e9b\u5206\u6570\u4e0d\u660e\u786e\u3002
\u56e0\u4e3a\u7537\u4eba\u4e0e\u5973\u4eba\u4eba\u6570\u7684\u6bd4\u662f2:9\uff0c\u5973\u4eba\u4e0e\u513f\u7ae5\u4eba\u6570\u7684\u6bd4\u662f3:7
\u6240\u4ee5\u7537\u4eba\u4e0e\u5973\u4eba\u4e0e\u513f\u7ae5\u4eba\u6570\u7684\u6bd42:9:21
\u8bbe\u7537\u4eba\u67092x\u4eba\u5219\u5973\u4eba\u67099x\u4eba\uff0c\u513f\u7ae5\u670921x\u4eba
30*2x+20*9x+10*21x=9450
x=21
\u6240\u4ee5\u7537\u4eba\u670942\u4eba\uff0c\u5973\u4eba\u6709189\u4eba\uff0c\u513f\u7ae5\u6709441\u4eba
采纳哦
绛旓細绗洓棰橈紝璁捐繘浠稾锛(320*1.17x-360x)/360x=1.04-1=0.04鎵浠ョ泩鍒=4 绗簲棰橈紝100锛1锛25锛74 锛1涓嶆槸璐ㄦ暟涔熶笉鏄悎鏁帮級绗鍏锛鍥犱负涓夎褰㈣搴=180掳鎵浠ユ渶澶у唴瑙掍负鑷冲皯澶т簬绛夎竟涓夎褰㈢殑瑙掑害锛屾墍浠ュぇ浜60掳 绗竷棰橈紝璁剧敳涓簒锛屼箼涓(2800-x),鎵浠ワ紝3/4x+4/5(2800-x)=2100 瑙e緱X=...
绛旓細1 鍥犱负鈥滃悇涔颁簡涓鏀浉鍚岀殑閽㈢瑪鈥濓紝鎵浠ヨ姳鎺夌殑閽辨槸涓鏍峰鐨勶紝閭d箞鍙互璁鹃挗绗斾环鏍间负x鍏冿紝鍒楀嚭鏂圭▼涓 x/锛3/5锛+x/锛3/4锛+x/锛2/3锛=54锛岃В鍑簒=12锛岀劧鍚庣敤鍚勮嚜鍓╀笅鐨勯挶涓庣敤鎺夌殑閽辩殑姣斾緥鍒嗗埆绠楀嚭寮犮佺帇銆佹潕鍓╀綑鐨勯挶涓猴細12*锛堬紙1-3/5锛/锛3/5锛夛級=8銆12*锛堬紙1-3/4锛/锛3/4...
绛旓細1.璁剧敺鐢焫浜猴紝濂崇敓y浜猴紝x=7/8y锛岋紙x+4锛=10/11锛坹-1锛夛紝瑙e緱x=126锛寉=144 2.璁剧櫧x锛岄粦y锛 y=4/5x, (y-4)=2/3(x+2) 锛岃В寰梮=40 , y=32 3.璁鹃暱x锛屽y锛2x+2y=100, 2x*(4/3)+2y*(5/4)=100+30,瑙e緱x=30 , y=20 4.璁剧敳鏍锛屼箼鏍锛4/5x+2/7y=1/...
绛旓細1. 韬暱=12绫 灏鹃暱=9绫 韬暱=3绫 鎵浠ュ叏闀挎槸24绫 2. 璁惧師璁″垝澶╂暟涓篨 璁惧疄闄呴渶瑕佸ぉ鏁颁负Y 浼氬彉鎴愪互涓嬬▼寮:X = Y + 10 200X = 250Y 瑙e嚭杩欎釜鏂圭▼鍚 X=50 Y=40 鐒跺悗X鍐嶄箻浜200 鏈鍚庣粨鏋滄槸 200 x 50 = 1000鍙 3.璁句粬浠竴璧疯蛋浜哫涓皬鏃 璁炬昏矾绋嬩负Y 寰楀嚭浠ヤ笅鏂圭▼锛80x+90x =...
绛旓細2锛庝慨涓鏉℃按娓狅紝鍗曠嫭淇紝鐢查槦闇瑕20澶╁畬鎴愶紝涔欓槦闇瑕30澶╁畬鎴愩傚鏋滀袱闃熷悎浣滐紝鐢变簬褰兼鏂藉伐鏈夊奖鍝嶏紝浠栦滑鐨勫伐浣滄晥鐜囧氨瑕侀檷浣庯紝鐢查槦鐨勫伐浣滄晥鐜囨槸鍘熸潵鐨勪簲鍒嗕箣鍥涳紝涔欓槦宸ヤ綔鏁堢巼鍙湁鍘熸潵鐨勫崄鍒嗕箣涔濄傜幇鍦ㄨ鍒16澶╀慨瀹岃繖鏉℃按娓狅紝涓旇姹備袱闃熷悎浣滅殑澶╂暟灏藉彲鑳藉皯锛岄偅涔堜袱闃熻鍚堜綔鍑犲ぉ锛熻В锛氱敱棰樻剰寰楋紝鐢茬殑...
绛旓細1/1*3+1/3*5+1/5*7+鈥︹+1/47*49 = 1/2(1-1/3)+...1/2(1/47-1/49)= 1/2(1-1/3+1/3-1/5+...+1/47-1/49)=24/49 1/2*5+1/3*5+1/8*11+鈥︹+1/20*23 = = 3/4+7/12-9/20+11/30-13/42 =(1-1/4+1/4+1/3-1/4-1/5+1/5+1/6-1/6-1...
绛旓細43銆佷竴杈嗘苯杞︿粠鐢插湴寮寰涔欏湴锛岃嫢杞﹂熸彁楂20%锛屽彲姣斿師瀹氭椂闂存彁鍓1灏忔椂鍒拌揪锛氳嫢浠ュ師閫熻椹80鍗冪背鍚庯紝鍐嶅皢閫熷害鎻愰珮25%锛屽垯鍙彁鍓40鍒嗛挓鍒拌揪锛岀敳涔欎袱鍦扮浉璺濆灏戠背锛熻В锛氶熷害鎻愰珮20%鍚庡彉涓1脳锛1+20%锛=1.2 鍘熸潵閫熷害鍜岀幇鍦ㄩ熷害涔嬫瘮=1锛1.2=5锛6 鏃堕棿涔嬫瘮=6锛5 閭d箞鍘熸潵鐢ㄧ殑鏃堕棿=1/锛1-5/6锛...
绛旓細(1)鏈澶х殑鏄98765,鏈灏忕殑鏄10234,98765-10234=88531 (2)1鍒50鐨勬墍鏈夎川鏁版槸:2,3,5,7,11,13,17,19,23,29,31,37,41,43,47 鍏辨湁15涓,1涓嶆槸璐ㄦ暟涔熶笉鏄悎鏁,鎵浠1-50涓湁16涓笉鏄悎鏁 鏈鍧忕殑鎯呭喌鏄墠16涓濂介兘涓嶆槸鍚堟暟,閭d箞绗17涓偗瀹氭槸鍚堟暟浜,閭d箞n鏈灏忎负17 (3)璁5鍒嗘湁x涓,7...
绛旓細X=360...浜斿勾绾 2锛480-X锛=2*锛480-360锛=2*120=240...鍏勾绾 5銆佸姞宸ュ悓涓绉嶉浂浠讹紝鐢查渶瑕3鍒嗛挓锛屼箼闇瑕3锛5鍒嗛挓锛屼笝瑕4鍒嗛挓锛庣幇鍦ㄥ姞閲嶈繖鏍风殑闆朵欢1825涓紝浠栦滑涓変汉鍚屾椂鍔犲伐闆朵欢锛屽湪瀹屾垚浠诲姟鏃跺悇鍔犲伐澶氬皯涓浂浠讹紵鐢插伐鏁1/3锛屼箼宸ユ晥1/3.5=2/7锛屼笝宸ユ晥1/4 鐢插伐鏁1825*1/3=1825/3涓紝...
绛旓細2锛庝慨涓鏉℃按娓狅紝鍗曠嫭淇紝鐢查槦闇瑕20澶╁畬鎴愶紝涔欓槦闇瑕30澶╁畬鎴愩傚鏋滀袱闃熷悎浣滐紝鐢变簬褰兼鏂藉伐鏈夊奖鍝嶏紝浠栦滑鐨勫伐浣滄晥鐜囧氨瑕侀檷浣庯紝鐢查槦鐨勫伐浣滄晥鐜囨槸鍘熸潵鐨勪簲鍒嗕箣鍥涳紝涔欓槦宸ヤ綔鏁堢巼鍙湁鍘熸潵鐨勫崄鍒嗕箣涔濄傜幇鍦ㄨ鍒16澶╀慨瀹岃繖鏉℃按娓狅紝涓旇姹備袱闃熷悎浣滅殑澶╂暟灏藉彲鑳藉皯锛岄偅涔堜袱闃熻鍚堜綔鍑犲ぉ锛熻В锛氱敱棰樻剰寰楋紝鐢茬殑...