从一加到一百等于多少啊?《这样一加二、加三、加四、一直加到一百、》
1+2+3+4+……+98+99+100=(1+100)+(2+99)+……+(49+52)+(50+51)
=101*50
=5050
绛旓細浠庝竴鍔犲埌涓鐧 =锛1+100锛墄100梅2 =101x50 =5050
绛旓細浠庝竴鍔犲埌涓鐧 缁撴灉绛変簬5050锛岃绠楄繃绋嬫槸锛1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+鈥︹+100=锛1+99锛*50+50=5050
绛旓細浣犲ソ锛佽В锛1+100=101 2+99=101 3+98-101 銆傘49+52=101 50+51=101 鎵浠 101*50=5050 濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶锛屽鏋滄弧鎰忚鐐瑰嚮鍙充笂瑙掑ソ璇勫苟鈥滈噰绾充负婊℃剰鍥炵瓟鈥濆鏋滄湁鍏朵粬闂璇烽噰绾虫湰棰樺悗锛屽彟澶栧彂骞剁偣鍑绘垜鐨勫ご鍍忓悜鎴戞眰鍔╋紝绛旈涓嶆槗锛岃璋呰В锛岃阿璋傦紝 浣犵殑閲囩撼鏄垜鏈嶅姟鐨勫姩鍔涖傜瀛︿範...
绛旓細1+2+3+銆傘傘+100 =(1+100)+(2+99)+...+(50+51)=50*101 =5050
绛旓細5050 1+99 2+98...
绛旓細浣犲ソ锛佽В锛1+2+鈥︹+99+100 =(1+100)+(2+99)+鈥︹+锛50+51锛=101+101+鈥︹+ 101 =101脳(100梅2)=101脳50 =5050 濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶锛屽鏋滄弧鎰忚鐐瑰嚮鍙充笂瑙掑ソ璇勫苟鈥滈噰绾充负婊℃剰鍥炵瓟鈥濆鏋滄湁鍏朵粬闂璇烽噰绾虫湰棰樺悗锛屽彟澶栧彂骞剁偣鍑绘垜鐨勫ご鍍忓悜鎴戞眰鍔╋紝绛旈涓嶆槗锛岃璋呰В锛岃阿璋...
绛旓細5050
绛旓細5050 甯屾湜瀵逛綘鏈夊府鍔╋紝鏈涚偣鍑"閫変负婊℃剰绛旀"
绛旓細浠庝竴鍔犲埌涓鐧剧瓑浜庡灏? 鐢"楂樻柉瀹氬緥":(棣栭」 鍔 鏈」)涔樹互 椤规暟 闄や互 2 (1+100)*100/2=101*100/2=10100/2=5050 浠庝竴鍔犲埌涓鐧 =锛1+100锛墄100梅2 =101x50 =5050 5050 鏂圭▼鎬濇兂锛屼护x=1+2+3+鈥︹+98+99+100锛 鍊掑簭鍐欙紝鈭磝=100+99+98+鈥︹+3+2+1, 閭d箞2x=101+101+...
绛旓細浣犲ソ锛屼綘鎻愬緱杩欎釜闂鏄竴閬撶畝鍗曠殑灏忓鏁板棰 杩欓亾棰樹富瑕佽冨療绠渚挎柟娉曠殑璁$畻 杩欓亾棰樼殑瑙f硶鏄 杩炵画鏁板瓧鐩稿姞绛変簬 n*(n+1)/2 鎵浠浠1鍔犲埌100灏辩瓑浜 100*(100+1)/2=5050 甯屾湜甯埌浣狅紝鏈涢噰绾