任何数乘以101的巧妙方法 101乘87的简便方法
78\u4e58101\u7684\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b9778x101\u8ba1\u7b97\u65b9\u6cd5\uff1a78x101=78x(100+1)=78x100+78x1=7800+78=7878\u3002
\u8fd9\u4e2a\u65b9\u6cd5\u662f\u4e58\u6cd5\u5206\u914d\u7387\uff0c\u4e24\u4e2a\u6570\u7684\u548c\u4e0e\u4e00\u4e2a\u6570\u76f8\u4e58\uff0c\u53ef\u4ee5\u5148\u628a\u5b83\u4eec\u5206\u522b\u4e0e\u8fd9\u4e2a\u6570\u76f8\u4e58\uff0c\u518d\u5c06\u79ef\u76f8\u52a0\u8fd9\u53eb\u505a\u4e58\u6cd5\u5206\u914d\u5f8b\u3002
\u5b57\u6bcd\u8868\u793a\uff1acx(a+b)=axc+bxc\uff1b
\u53d8\u5f0f\uff1aaxc+bxc=(a+b)xc\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u8fd0\u7b97\u5b9a\u5f8b
\u6574\u6570\u7684\u4e58\u6cd5\u8fd0\u7b97\u6ee1\u8db3\uff1a\u4ea4\u6362\u5f8b\uff0c\u7ed3\u5408\u5f8b\uff0c \u5206\u914d\u5f8b\uff0c\u6d88\u53bb\u5f8b\u3002
1\u3001\u4e58\u6cd5\u4ea4\u6362\u5f8b\uff1aab=ba\uff1b
2\u3001\u4e58\u6cd5\u7ed3\u5408\u5f8b\uff1a\uff08ab\uff09c=a(bc)\u3002
\u53cc\u4f4d\u4e58\u6cd5
\u4e2a\u4f4d\u4e58\u4ee5\u53e6\u4e00\u4e2a\u56e0\u6570\uff0c\u7136\u540e\u5341\u4f4d\u4e58\u4ee5\u53e6\u4e00\u4e2a\u56e0\u6570\uff0c\u6700\u540e\u4fe9\u8005\u76f8\u52a0\u3002
\u4f8b\uff1a12\u00d714=\uff08 \uff09\u3002
\u89e3:10*12=120\uff1b
4*12=48\uff1b
48+120=168\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u4e58\u6cd5\u5206\u914d\u7387
101x87
=(100+1)x87
=100x87+1x87
=8700+87
=8787
\u8003\u70b9 \u4e58\u6cd5\u5206\u914d\u5f8b\u5c31\u662f\u4e24\u4e2a\u6570\u76f8\u52a0(\u6216\u76f8\u51cf)\u518d\u4e58\u53e6\u4e00\u4e2a\u6570,\u7b49\u4e8e\u628a\u8fd9\u4e2a\u6570\u5206\u522b\u540c\u4e24\u4e2a\u52a0\u6570\uff08\u51cf\u6570\uff09\u76f8\u4e58,\u518d\u628a\u4e24\u4e2a\u79ef\u76f8\u52a0\uff08\u76f8\u51cf\uff09,\u5f97\u6570\u4e0d\u53d8.\u7528\u5b57\u6bcd\u8868\u793a\uff1a\uff08a+b\uff09x c=axc+bxc \uff08\u6ce8\uff1ax\u662f\u4e58\u53f7\uff09,\u8fd8\u6709\u4e00\u79cd\u8868\u793a\u6cd5\uff1aa(b+c)=ab+ac
如：6457*101=645700+6457=652157，234*101=23400+234=23634。
就是把101化成（100+1）再分别相乘。
绛旓細浠讳綍鏁颁箻浠101鐨勫阀濡欐柟娉曞氨鏄换浣曟暟鍚庡姞涓や釜闆跺啀鍔犱换浣曟暟銆傚锛6457*101=645700+6457=652157锛234*101=23400+234=23634銆
绛旓細杩欎釜鏂规硶鏄箻娉曞垎閰嶇巼锛屼袱涓暟鐨勫拰涓庝竴涓暟鐩镐箻锛鍙互鍏堟妸瀹冧滑鍒嗗埆涓庤繖涓暟鐩镐箻锛屽啀灏嗙Н鐩稿姞杩欏彨鍋氫箻娉曞垎閰嶅緥銆傚瓧姣嶈〃绀猴細cx(a+b)=axc+bxc锛涘彉寮忥細axc+bxc=(a+b)xc銆
绛旓細绗竴绉嶆柟娉曪細99脳101 =99脳锛100+1锛=99脳100+99 =9900+99 =9999 绗簩绉嶆柟娉曪細99脳101 =锛100-1锛壝101 =100脳101-101 =10100-101 =9999 杩欓亾棰樹富瑕佽繍鐢ㄤ簡涔樻硶鍒嗛厤寰嬬殑杩愮畻鏂规硶銆傛壘鍒版帴杩100鐨勬暟瀛楋紝杩涜鎷嗛」锛岃繍鐢ㄤ箻娉曞垎閰嶅緥杩涜绠渚胯繍绠椼傝繖閬撻99鍜101閮界鍚堣瑙ｉ瑙勫緥锛屾墍浠ヤ袱绉嶈В娉曢兘...
绛旓細鍙互灏11杞寲涓10,锛1锛屾垨鑰呭皢101杞寲鎴100锛1锛岃繖绉嶆儏鍐典笅灏辨湁涓ょ鍋氭硶銆傦紙1锛11脳101 =锛10锛1锛壝101 =10 脳101锛101 =1010锛101 =1111 锛2锛11脳101 =11脳锛100+1锛=11脳100锛11 =1111 涓汉姣旇緝鍠滄绗簩绉嶃傜浜岋紝11鍜101鏄壒娈婄殑鏁板瓧锛岃繖涓や釜鏁颁箻浠ヤ换浣曟暟锛屽緱鏁伴兘鏄湁瑙勫緥鐨勶紝...
绛旓細9.5涔樹互101绠渚胯绠楄繃绋嬪涓嬶細9.5脳101 =9.5脳锛100+1锛=9.5脳100+9.5脳1 =950+9.5 =959.5 鎵浠9.5涔樹互101绠渚胯绠楃殑鏈鍚庣粨鏋滄槸959.5銆
绛旓細绠渚鏂规硶璁＄畻204脳101鐨鍏蜂綋姝ラ濡備笅锛1. 鎶201鎷嗗垎鎴200+1锛岀劧鍚庢妸鎷嗗紑鐨勪袱涓暟鍒嗗埆涔樹互204銆2. 鍏堟妸200脳204鐨勭粨鏋滀箻2锛岀浉褰撲簬鎶200鍜204閮戒箻浜嗕竴閬嶏紝寰楀埌宸笉澶氱殑缁撴灉鍐嶄箻涓閬嶃3. 鎶1脳204鐨勭粨鏋滃啀鍔犱笂绗2姝ュ緱鍒扮殑缁撴灉锛屽嵆鍙緱鍑204脳101鐨勮繎浼煎笺傚叿浣撹绠楄繃绋嬪涓嬶細200脳204=40800 40800...
绛旓細鎮ㄥソ锛屾牴鎹偍鐨勯棶棰橈細涓や綅鏁颁箻浠101锛屽彲浠ユ妸101鍐欐垚锛100+1锛夌劧鍚庡垎鍒箻浠ヨ繖涓袱浣嶆暟灏遍潪甯哥畝鍗曚簡锛屼緥濡傦細44脳101 =44脳锛100+1锛=44脳100+44脳1 =4400+44 =4444 杩欐牱璁＄畻灏遍潪甯哥畝鍗曚簡锛屾効瀵规偍鐨勯棶棰樻湁鎵甯姪銆
绛旓細绠渚胯繍绠楀涓嬶細71脳101 =71脳锛100+1锛=71脳100+71 =7100+71 =7171 杩欓亾棰樻槸鍏稿瀷鐨勫埄鐢涔樻硶鍒嗛厤寰嬭繘琛岃繍绠楃殑棰樺瀷锛屽厛鎵惧埌鎺ヨ繎100鐨鏁板瓧101锛岀劧鍚庡啀杩涜鎷嗗垎涓100+1锛岀劧鍚庤繍鐢ㄥ垎閰嶅緥杩涜绠渚胯繍绠椼
绛旓細52脳101=5252 涓涓袱浣鏁颁箻浠101锛岀Н鐨勭粨鏋滄槸灏嗚繖涓袱浣嶆暟杩炵画鍐欎袱閬嶃
