简算100十99一98-97十96十95一94一93十…十4十3一2一1 100+99-98-97+96+95-94-93+........
100+99-98-97+96+95-94-93+\u2026\u2026+4+3-2-1\u7b80\u7b97100+99-98-97+96+95-94-93+\u2026\u2026+4+3-2-1
=\uff08100+99-98-97\uff09+\uff0896+95-94-93\uff09+\u2026\u2026+\uff084+3-2-1\uff09
=4+4+\u2026\u2026+4
=4\u00d725
=100
\u5f88\u9ad8\u5174\u4e3a\u60a8\u89e3\u7b54!
\u6709\u4e0d\u660e\u767d\u7684\u53ef\u4ee5\u8ffd\u95ee\uff01\u5982\u679c\u60a8\u8ba4\u53ef\u6211\u7684\u56de\u7b54\u3002
\u8bf7\u70b9\u51fb\u4e0b\u9762\u7684\u3010\u9009\u4e3a\u6ee1\u610f\u56de\u7b54\u3011\u6309\u94ae\uff0c\u8c22\u8c22\uff01
100-99+98-97+96-95+94-93+....+4-3+2-1 =(100-99)+(98-97)+(96-95)+(94-93)+....+(4-3)+(2-1) =1+1+1+\u2026\u2026+1 =50
根据99-98-97+96=0可知从99一直到4中间全为0所以 原式=100+3-2-1=100
绛旓細鐨勬渶鍏堢敱鎻愬嚭锛岄珮鏂敤寰堢煭鐨勬椂闂磋绠楀嚭浜嗗皬瀛﹁佸笀甯冪疆鐨勪换鍔★細瀵硅嚜鐒舵暟浠1鍒100鐨勬眰鍜屻備粬鎵浣跨敤鐨勬柟娉曟槸锛氬50瀵规瀯閫犳垚鍜101鐨勬暟鍒楁眰鍜岋紙1+100锛2+98锛3+97...锛夛紝鍚屾椂寰楀埌缁撴灉锛5050銆傝繖涓骞达紝楂樻柉9宀併傚叏涓栫晫骞夸负娴佷紶鐨勪竴鍒欐晠浜嬭锛岄珮鏂10宀佹椂绠楀嚭甯冪壒绾崇粰瀛︾敓浠嚭鐨勫皢1鍒100鐨勬墍鏈夋暣鏁板姞...
绛旓細1鍗3+5鍗7鍗9...鍗97鍗99鐨绠绠杩囩▼濡備笅锛1锛3锛5锛7锛9锛嬧︹︼紜95锛97锛99 =(1+99) +(3+97) +(5+95) +...(49+51)=25*100 =2500 1+3+5+7+9+鈥︹+95+97+99鍙互鍙戠幇瑙勫緥鈥滃ご鈥濆拰鈥滃熬鈥濈浉鍔犵瓑浜100锛屽紡瀛愪腑涓鍏辨湁50涓鏁 鎵浠ュ師寮忥紳锛堬紙1+99锛+锛3+97锛+锛5+95...
绛旓細绠绠杩囩▼ 锛97鍗98鍗99鍗100鍗l0l鍗102鍗1O3 锛100x7 =700
绛旓細1+2+3+鈥︹+97+98+99绠绠濡備笅锛氬埄鐢ㄧ瓑宸暟鍒楃殑姹傚拰鍏紡璁＄畻杈冧负绠渚裤傜瓑宸暟鍒楃殑鍜=(棣栭」+鏈」)脳椤规暟梅2 鍦ㄨ繖閬撻涓紝棣栭」鏄1锛屾湯椤规槸99锛岄」鏁扮瓑浜99銆1+2+3+鈥︹+97+98+99 =(1+99)脳99梅2 =100梅2脳99 =50脳99 =4950 ...
绛旓細鎮ㄥソ锛绠渚胯绠鍏紡濡備笅锛1+3+5+7鈥︹+97+99 =锛1+99锛*50/2 =5000/2 =2500 杩欐槸涓涓瓑宸暟鍒楋紝璁＄畻鏂规硶鏄紙棣栭」+鏈」锛*椤规暟/2 甯屾湜瀵规偍鏈夊府鍔
绛旓細绛旓細1鍗2鍗3鍗4鍗5鍗佸埌100绠渚胯绠 1鍔犱笂100鐨勫拰涔樹互100闄や互2寰5050,杩欎釜鏂规硶灏辨槸锛氶椤瑰姞灏鹃」鐨勫拰涔樹互椤规暟闄や互2
绛旓細99+99x99+99x99x99 =99x锛1+99+99x99锛=99x銆100+锛100-1锛墄99锛夈=99x銆100+9900-99銆=99x9901 =9901x100-9901 =990100-9901 =980199
绛旓細=100-2+100-3+100-1+100-6+100-10 =500-锛2+3+1+6+10锛=500-22 =478
绛旓細=锛1+2-3锛+锛4+5-6锛+锛7+8-9锛+鈥+锛97+98-99锛=0+3+6+9+鈥+96 =3脳锛1+2+3+4+鈥+31+32锛=1584 绠渚胯绠鏂规硶锛1銆佸湪鍚岀骇杩愮畻涓紝鍙互浠绘剰浜ゆ崲鏁板瓧鐨勪綅缃紝浣嗚杩炵潃鍓嶉潰鐨勭鍙蜂竴璧蜂氦鎹傦紙鍔犳硶鎴栦箻娉曚氦鎹㈠緥锛2 銆佸湪鍚岀骇杩愮畻涓紝鍔犲彿鎴栦箻鍙峰悗闈㈠彲浠ョ洿鎺ユ坊鎷彿锛屽幓鎷彿銆傚噺鍙枫...
绛旓細杩欓涓嶉毦灏辨槸绠楄捣浜嗛夯鐑︼紝鍙憡璇変綘鏂规硶锛屼綘鑷繁绠楀幓鍚э紝鍘熷紡=1/(100-1)+1/(100-2)+1/(100-3)+1/(100-4)=[(100-2)*(100-3)*(100-4)+(100-1)*(100-3)*(100-4)+(100-1)*(100-2)*(100-4)+(100-1)*(100-2)*(100-3)]/(100-1)*(100-2)*(100-3)*(100-4)...
