一共16只鸟如果每4只鸟装在1个笼子里需要几个笼子,要怎么算 把七只小鸟放进两个鸟笼里总有一个笼子至少放四只如果一共有十五...
\u5728\u4e00\u4e2a\u7b3c\u5b50\u91cc\uff0c\u6709\u9e21\u53c8\u6709\u5154\u51718\u53ea\uff0c\u6570\u4e00\u4e0b\u5b83\u4eec\u7684\u811a\uff0c\u5171\u670920\u53ea\uff0e\u8bf7\u95ee\u7b3c\u5b50\u91cc\u9e21\u3001\u5154\u5404\u6709\u51e0\u53ea\u9e21\u67096\u53ea\uff0c\u5154\u67092\u53ea\u3002
\u8bbe\u9e21\u6709X\u53ea\uff0c\u5154\u6709Y\u53ea\uff0c
\u6839\u636e\u9898\u610f\uff0c\u6709\u9e21\u53c8\u6709\u5154\u51718\u53ea\uff0c
\u53ef\u5217\u5f0f\u4e3a\uff1aX+Y=8
\u6839\u636e\u9898\u610f\uff0c\u5b83\u4eec\u7684\u811a\uff0c\u5171\u670920\u53ea\uff0c
\u53ef\u5217\u5f0f\u4e3a\uff1a2X+4Y=20
\u89e3\u6b64\u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4\uff0c\u53ef\u5f97\uff1a
X=6\uff0cY=2
\u6240\u4ee5\u9e21\u67096\u53ea\uff0c\u5154\u67092\u53ea\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u6b64\u7c7b\u95ee\u9898\u5c5e\u4e8e\u6570\u5b66\u4e2d\u5178\u578b\u7684\u9e21\u5154\u540c\u7b3c\u95ee\u9898\u3002
\u9e21\u5154\u540c\u7b3c\u95ee\u9898\u7684\u89e3\u9898\u516c\u5f0f
\u516c\u5f0f1\uff1a\uff08\u5154\u7684\u811a\u6570\u00d7\u603b\u53ea\u6570\uff0d\u603b\u811a\u6570\uff09\u00f7\uff08\u5154\u7684\u811a\u6570\uff0d\u9e21\u7684\u811a\u6570\uff09=\u9e21\u7684\u53ea\u6570
\u603b\u53ea\u6570\uff0d\u9e21\u7684\u53ea\u6570=\u5154\u7684\u53ea\u6570
\u516c\u5f0f2\uff1a\uff08 \u603b\u811a\u6570\uff0d\u9e21\u7684\u811a\u6570\u00d7\u603b\u53ea\u6570\uff09\u00f7\uff08\u5154\u7684\u811a\u6570\uff0d\u9e21\u7684\u811a\u6570\uff09=\u5154\u7684\u53ea\u6570
\u603b\u53ea\u6570\uff0d\u5154\u7684\u53ea\u6570=\u9e21\u7684\u53ea\u6570
\u516c\u5f0f3\uff1a\u603b\u811a\u6570\u00f72\u2014\u603b\u5934\u6570=\u5154\u7684\u53ea\u6570
\u603b\u53ea\u6570\u2014\u5154\u7684\u53ea\u6570=\u9e21\u7684\u53ea\u6570
\u516c\u5f0f4\uff1a\u5154\u603b\u53ea\u6570=\uff08\u9e21\u5154\u603b\u811a\u6570-2\u00d7\u9e21\u5154\u603b\u53ea\u6570\uff09\u00f72 \u9e21\u7684\u53ea\u6570=\u9e21\u5154\u603b\u53ea\u6570-\u5154\u603b\u53ea\u6570
\u516c\u5f0f5\uff1a\u9e21\u7684\u53ea\u6570=(4\u00d7\u9e21\u5154\u603b\u53ea\u6570-\u9e21\u5154\u603b\u811a\u6570\uff09\u00f72 \u5154\u7684\u53ea\u6570=\u9e21\u5154\u603b\u53ea\u6570-\u9e21\u7684\u53ea\u6570
\u516c\u5f0f6 \uff1a4\u00d7+2\uff08\u603b\u6570\uff0dx\uff09=\u603b\u811a\u6570 \uff08x=\u5154\uff0c\u603b\u6570\uff0dx=\u9e21\u6570\uff0c\u7528\u4e8e\u65b9\u7a0b\uff09
\u628a\u4e03\u53ea\u5c0f\u9e1f\u653e\u8fdb\u4e24\u4e2a\u9e1f\u7b3c\u91cc\u603b\u6709\u4e00\u4e2a\u7b3c\u5b50\u81f3\u5c11\u653e\u56db\u53ea\u5982\u679c\u4e00\u5171\u6709\u5341\u4e94\u53ea\u5c0f\u9e1f\u4f1a
\u603b\u6709\u4e00\u4e2a\u7b3c\u5b50\u81f3\u5c11\u653e\u516b\u53ea
15/2=7.5 \u8fdb\u4f4d\u6210\u516b\u53ea
16÷4＝4 (个) 所以要四个笼子
四
绛旓細16/4=4锛岄渶瑕4鍙瀛
绛旓細姣忓彧楦熺鍏堝垎鍒斁1銆2銆3銆4銆5鍙紝杩樺墿1鍙笩锛屾瘡鍙笩绗肩殑鍙暟瑕佷笉鐩稿悓锛屽墿涓嬬殑1鍙笩鍙兘鏀炬渶鍚庝竴涓瀛愶紝鎵浠5涓笩绗肩殑鍙暟鍒嗗埆鏄1銆2銆3銆4銆6
绛旓細1,2,3,4,6
绛旓細锛16涓</锛夊啘鍦洪噷鐨勪紮浼达細</缇婄兢涓紝7鍙緤鍔犱笂6鍙紝鎬绘暟鏄13</鍙傦紙13鍙</锛夎姳鏈电殑缁芥斁锛</鍏板叞绗竴澶╂憳浜8鏈佃姳锛岀浜屽ぉ鍙堟憳浜5鏈碉紝鎬诲叡鏄13</鏈点傦紙13鏈</锛夋澗鏋滅殑鏀惰幏锛</鍝ュ摜寮濮嬫湁11涓澗鏋滐紝缁欎簡8涓紝鍓╀笅3</涓傦紙3涓</锛夊皬楦熺殑褰掑发锛</濡傛灉鏈16鍙皬楦锛岄璧颁簡7鍙紝杩樺墿9...
绛旓細鏍戜笂鏈8鍙笩,椋炶蛋浜5鍙,鍙堟潵浜6鍙爲涓婁竴鍏辨湁澶氬皯鍙笩绗艰繖閬撻鎬庝箞鍋氾紵8-5+6 =3+6 =9锛堝彧锛夌瓟锛氱幇鍦ㄦ爲涓婁竴鍏辨湁9鍙
绛旓細娴侀噺涓嶅锛屾寜椤哄簭鏉 7 529 64 90 25 342.44 96 84 閽5鍦2 鍙35鏃28 鏈162瀛35 灏25妗157 棰樻病璇绘竻 100 96 95/91/93 鐢(浜斾釜涓寰幆) 3 339 銆庢庝箞娌″垎锛熴
绛旓細瑙ｇ瓟杩囩▼锛氾紙16+4-2锛壝2=9鍙 9-4=5鍙 9+2=11鍙 绛旓細A绗兼湁5鍙紝B绗兼湁11鍙
绛旓細浣犵殑鎰忔濇槸鐜板湪涓ら鏍戜笂涓鏍峰鍚.闂師鏉ョ涓璇惧拰绗簩璇惧悇鏈夊灏鍙笩?鎴戞潵甯綘鍥炵瓟鍚 鍋囪绗竴妫垫爲鏈塜鍙,绗簩妫垫湁Y鍙.鍒椾簩鍏冧竴娆℃柟绋嬬粍濡備笅锛歑+Y=17 X-5=Y 瑙ｅ緱锛歑=11,Y=6
绛旓細瑙ｏ紱璁剧涓妫垫爲涓婂師鏈墄鍙笩锛岄偅涔堢浜屾５鏍戜笂鍘熸湁锛16-x锛夊彧锛寈-5=16-x+5-2 x-5=19-x 2x=24 x=12 16-12=4锛堝彧锛夛紱绛旓紱鍘熸潵绗竴妫垫爲涓婃湁12鍙笩锛岀浜屾５鏍戜笂鏈4鍙笩锛
绛旓細绛旓細鍘熸潵绗竴妫垫爲涓婃湁12鍙笩,绗簩妫垫爲涓婃湁4鍙笩.銆愬師鏉ヤ竴鍏辨湁16鍙笩,椋炶蛋浜2鍙,涓ゆ５鏍戜笂鎬诲叡灏卞彧鍓╀笅浜14鍙.鏈鍚庝袱妫垫爲涓婄殑楦熺浉绛,灏辫鏄庢渶鍚庝袱妫垫爲涓婇兘鏈7鍙笩,鑰岀浜屾５鏍戜笂鐨7鍙笩涓湁5鍙槸浠庣涓妫垫爲涓婇杩囨潵鐨,閭ｄ箞涔嬪墠绗竴妫垫爲涓婃槸7+5=12锛堝彧锛,绗簩妫垫爲涓婃湁16-12=4锛...
