207乘以101怎么用定律巧算 101x56-56怎样巧算?
3.92\u4e58\u4ee5101\u53ef\u4ee5\u8fd0\u7528\u4ec0\u4e48\u65b9\u6cd5\u6765\u5de7\u7b973.92\u4e58\u4ee5101\u53ef\u4ee5\u8fd0\u7528\uff08\u4e58\u6cd5\u5206\u914d\u5f8b\uff09\u6765\u5de7\u7b97
3.92\u00d7101
\uff1d3.92\u00d7\uff08100+1\uff09
\uff1d3.92\u00d7100+3.92\u00d71
\uff1d392+3.92
\uff1d395.92
\uff08101-1\uff09\u4e58\u4ee556\u7b49\u4e8e100\u4e58\u4ee556\uff1d5600
207×101=207×(100+1)
=207×100+207×1
=20700+207
=20907
(10000-3967-967)*101=（10000-（3967+967)）*（100+1）=（10000-4934）*（100+1）=5066*（100+1）=506600+5066=511666
等于100X207+1X207=20907
绛旓細8.9脳101 =8.9x(100+1)=890+8.9 =898.9
绛旓細727脳101-727 绠绠 727涔樹互101鍑727绛変簬101涓727鍑727鎵浠 鐢727脳100灏辨槸缁撴灉 727脳100-锛727脳1-727锛夛紳727脳100-0 锛72700
绛旓細浣22鎬庢病鍔炴硶锛熺瓑浜100脳22-1脳22锛屾牴鎹殑鏄涔樻硶鍒嗛厤鐜囩瓑浜2200锛屽噺鍘22灏卞彲浠ヤ簡
绛旓細=123脳锛100+1锛=123脳100+123脳1 =12300+123 =12423
绛旓細涔樻硶缁撳悎寰 涓変釜鏁扮浉涔橈紝鍙互鍏堜箻鍓嶄袱涓暟锛屾垨鑰呭厛涔樺悗涓や釜鏁帮紝绉笉鍙樸 (ab)c=a(bc)鍒嗛厤寰 鍒嗛厤寰嬫槸涔樻硶杩愮畻鐨勪竴绉嶇畝渚胯繍绠楋紝鍙敤浜庡垎鏁般佸皬鏁颁腑銆備富瑕佸叕寮忎负(a+b)c=ac+bc銆備袱涓暟鐨勫拰涓庝竴涓暟鐩镐箻锛屽彲浠ュ厛鎶婂畠浠垎鍒笌杩欎釜鏁扮浉涔橈紝鍐嶇浉鍔狅紝绉笉鍙橈紝杩欏彨鍋氫箻娉曞垎閰嶅緥銆傚垎閰嶅緥鐨勫弽鐢細35...
绛旓細25脳4锛変簲銆涔樻硶鍒嗛厤寰嬶細涓や釜鏁扮殑鍜屽悓涓涓暟鐩镐箻,绛変簬鎶婁袱涓姞鏁板垎鍒悓杩欎釜鏁扮浉涔,鍐嶆妸涓や釜绉姞璧锋潵,缁撴灉涓嶅彉銆傜敤瀛楁瘝琛ㄧずa脳(b+c)=ab+ac涔樻硶鍒嗛厤寰嬭櫧鐒跺氨杩欎竴涓瀹氬緥锛屼絾瀹冪殑鍙樺寲闈炲父澶氾紝鎵鏈夌殑鍙樺舰閮界涓嶅紑a脳(b+c)=ab+ac杩欐牱涓涓牴鏈紝鐞嗚В骞舵帉鎻″畠鐨勫彉鍖栧緢閲嶈銆
绛旓細搴旇灏辨槸鍒╃敤涔樻硶鍒嗛厤寰嬧33+77脳锛100+1锛=33+77+77脳100 =7810
绛旓細101*99=100*100-1*1 灏辨槸鍙栨暣鏁帮紝101鍜99鎺ヨ繎鐨勬暣鏁颁负100,101-100=1,100-99=1 103*97=100*100-3*3 110*90=100*100-10*10 115*85=100*100-15*15 杩欑鏂规硶鍙傚悎涓よ呯浉鍔/2=100鐨勮绠
绛旓細姹傛暀鏁板棰橈紝杩愮敤涔樻硶鐨勮繍绠瀹氬緥璁＄畻 62x101-62 =62脳锛101-1锛=62脳100 =6200 35x35+35x64+35 =35脳锛35+64+1锛=35脳100 =3500 銆40+4銆憍25 =40脳25+4脳25 =1000+100 =1100 84x25 =80脳25+4脳25 =2000+100 =2100 涓嬮潰姹宸х畻锛56x125 =7脳锛8脳125锛=7脳1000 =7000 16x...
绛旓細鍥炵瓟锛1.100*98+1*98 2.101*90+101*8 3. 101*100-101*2 閲囩撼鍝
