用2345这4个数字组成2位数乘两位数的乘法算式（数字不得重复）？ 用2345这4个数字组成2位数乘两位数的乘法算式（数字不得重...
\u75282345\u8fd94\u4e2a\u6570\u5b57\u7ec4\u62102\u4f4d\u6570\u4e58\u4e24\u4f4d\u6570\u7684\u4e58\u6cd5\u7b97\u5f0f\uff08\u6570\u5b57\u4e0d\u5f97\u91cd\u590d\uff0952\u00d743=2236\u6700\u5927\uff1b35\u00d724=840\u6700\u5c0f\u3002
\u4ee5\u4e0b\u662f\u9a8c\u8bc1\u5f0f\u5b50\uff1a
23\u00d745=1035
23\u00d754=1242
32\u00d745=1440
32\u00d754=1728
34\u00d725=850
34\u00d752=1768
25\u00d734=850
25\u00d743=1075
52\u00d734=1768
52\u00d743=2236
35\u00d724=840
35\u00d742=1470
53\u00d724=1272
53\u00d742=2226
25*34\u6700\u5c0f,42*53\u6700\u5927.
用2，3，4，5，四个数组二个二位数，例：可以组24和35两个数相乘24x35=840
也可以组成25和34相乘：
25x34=850
绛旓細杩欎釜鏄24鐐规父鎴 鏂规硶寰堝 鍒椾妇濡備笅锛(5-(2-3))*4 ((5-2)+3)*4 ((5+3)-2)*4 (5+(3-2))*4 ((5+3)+4)*2 (5+(3+4))*2 ((5+4)+3)*2 (5+(4+3))*2 2*((5+3)+4)2*(5+(3+4))2*((5+4)+3)2*(5+(4+3))2*((3+5)+4)2*(3+(5+4))2*((...
绛旓細璁捐繖涓笁浣嶆暟鏄疉BC锛5鐨勫嶆暟鏈綅蹇呴』鏄5锛屽垯C纭畾鏄5銆傚叾瀹冧袱浣嶄腑涓浣岮涓夐変竴锛孊浜閫変竴锛屽垯鏈3x2=6锛屾墍浠2345缁勬垚5鐨勫嶆暟鍏辨湁6涓傚涓嬪浘锛
绛旓細鍋囪4浣嶆暟鏄痑bcd锛屽弽搴忔暟鏄痙cba銆傚拰=1001a+110b+110c+1001d=1001(a+d)+110(b+c)鐢辨鍙a+d瓒婂ぇ锛屽拰瓒婂ぇ銆傚拰鏈澶=1001*(4+5)+110*(2+3)=955
绛旓細棣栧厛鐢ㄧ粍鍚堟硶锛屼粠2345鍥涗釜鏁板瓧涓変竴涓斁鍦ㄤ釜浣嶆湁4绉嶉夋硶锛屽啀浠庡墿浣欑殑涓変釜鏁板瓧涓変竴涓斁鍦ㄥ崄浣嶏紝浠ユ绫绘帹鎬诲叡鏈4脳3脳2=24绉嶉夋硶锛屽鏋滃彲浠ラ噸澶嶇殑璇濇瘡涓浣嶉兘鏈4绉嶉夋硶锛屽垯鏈4脳4脳4=64绉嶉夋硶銆
绛旓細姣忎釜鏁板鎵撳ご褰撶櫨浣嶉兘鍙互缁勬垚鍏釜涓嶅悓鐨勪笁浣嶆暟锛屼竴鍏鍥涗釜鏁板锛屾墍浠ュ彲浠缁勬垚4脳6=24锛屾槸24涓笉鍚岀殑涓変綅鏁般傚垎鍒槸锛234,235,243,245,253,254,324,325,342,345,352,354,423,425,432,435,452,453,523,524,532,534,542,543銆
绛旓細1銆佸彛璇锛氫竴涓暟鐨勫崄浣嶆暟鍔犱笂瀹冪殑涓浣嶆暟涔樹互11绛変簬鍜屻2銆佷緥棰橈細47+74=121璁＄畻鏂规硶锛氾紙4+7锛墄11=121锛68+86=154璁＄畻鏂规硶锛氾紙6+8锛墄 11=154锛58+85=143璁＄畻鏂规硶锛氾紙5+8锛墄11=143 涓夈佷竴鐩笁琛屽姞娉 1銆佸彛璇锛氭彁鍓嶈櫄杩涗竴锛屼腑闂村純9锛屾湯浣嶅純10 2銆佷緥棰橈細365427158锛644785963锛+742334452锛...
绛旓細鐢3456杩欏洓涓暟瀛楃粍鎴涓浣嶆暟涔樹互涓や綅鏁帮紝鎴戜滑鍏堟壘鍑烘渶澶х殑鏁板瓧鍏紝鍐嶆壘鍑烘瘮鍏皬涓鐐圭殑鏁颁簲锛屽啀鎵惧嚭锛屾瘮杩欒灏忕偣鐨鏁板瓧鍥锛屽啀鎵惧嚭姣斿洓灏忕殑涓夛紝灏卞彲浠ユ嫾鎴愪袱浣嶆暟涔樹互涓や綅鏁
绛旓細2345涓鍏卞彲浠缁勬垚鐨勪笁浣嶆暟鏈夛細4脳3脳2=24锛堜釜锛夋瘮324灏忕殑涓変綅鏁版湁锛3脳2=6锛堜釜锛夋墍浠ユ瘮324澶х殑涓変綅鏁版湁锛24-6-1=17锛堜釜锛
绛旓細瑙ｏ細2345涓紝鍒嗕笁绫伙紝鑳借3鏁撮櫎鐨勬湁1涓紝3 琚3闄や綑1鐨勬湁1涓紝4 琚3闄や綑2鐨勬湁2涓紝2鍜5 姣忕被鍙栦竴涓紝缁勬垚涓浣嶆暟闄や互3鏃犱綑鏁 鍙234锛屾湁A锛3锛3锛=6涓 鍙345锛屾湁A锛3锛3锛=6涓 6+6=12 绛旓細鑳界粍鎴12涓笁浣嶆暟銆
绛旓細鍥涗釜鏁板瓧缁勬垚鍥涗綅鏁鐨勭粍鍚堟湁24绉嶃傝绠楁柟娉曪細4锛=4*3*2*1=24涓傝绠楁湁澶氬皯绉嶇粍鍚堝彲浠ヤ娇鐢ㄦ帓鍒楃粍鍚堢殑鏂规硶锛屼緥濡2345鍙互缁勬垚24涓洓浣嶆暟锛岃繖24涓洓浣嶆暟鍒嗗埆鏄細5234銆5243銆5324銆5342銆5432銆5423銆2534銆2543銆2354銆2345銆2453銆2435銆3524銆3542銆3245銆3254銆3425銆3452銆4325銆4352銆4235銆4253...
