25x25简便计算
25x25 \u600e\u6837\u7b97\u7b80\u4fbf25\u00d725\u7b80\u4fbf\u8ba1\u7b97\uff1a
=(20+5)\u00d725
=20\u00d725+5\u00d725
=500+125
=625
\u5c0f\u5b66\u6570\u5b66\u7b80\u4fbf\u65b9\u6cd5\u5f52\u7eb3
1\u3001\u63d0\u53d6\u516c\u56e0\u5f0f\uff1a\u8fd9\u4e2a\u65b9\u6cd5\u5b9e\u9645\u4e0a\u662f\u8fd0\u7528\u4e86\u4e58\u6cd5\u5206\u914d\u5f8b\uff0c\u5c06\u76f8\u540c\u56e0\u6570\u63d0\u53d6\u51fa\u6765\uff0c\u8003\u8bd5\u4e2d\u5f80\u5f80\u5269\u4e0b\u7684\u9879\u76f8\u52a0\u51cf\uff0c\u4f1a\u51fa\u73b0\u4e00\u4e2a\u6574\u6570\u3002
2\u3001\u501f\u6765\u501f\u53bb\u6cd5\uff1a\u770b\u5230\u540d\u5b57\uff0c\u5c31\u77e5\u9053\u8fd9\u4e2a\u65b9\u6cd5\u7684\u542b\u4e49\u3002\u7528\u6b64\u65b9\u6cd5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u89c2\u5bdf\uff0c\u53d1\u73b0\u89c4\u5f8b\u3002
3\u3001\u62c6\u5206\u6cd5\uff1a\u62c6\u5206\u6cd5\u5c31\u662f\u4e3a\u4e86\u65b9\u4fbf\u8ba1\u7b97\u628a\u4e00\u4e2a\u6570\u62c6\u6210\u51e0\u4e2a\u6570\u3002
99\uff05x99+99\uff05
=99%x(99+1)
=99%x100
=99
4x8x1.25x25\uff05
=(4x25%)x(8x1.25)
=1x10
=10
\u5982\u6709\u4e0d\u660e\u767d\uff0c\u53ef\u4ee5\u8ffd\u95ee
\u5982\u6709\u5e2e\u52a9\uff0c\u8bb0\u5f97\u91c7\u7eb3\uff0c\u8c22\u8c22
56
绛旓細25x25 =20x30+5x5 =600+25 =625
绛旓細25脳25绠渚胯绠楋細=(20+5)脳25 =20脳25+5脳25 =500+125 =625 灏忓鏁板绠渚挎柟娉曞綊绾 1銆佹彁鍙栧叕鍥犲紡锛氳繖涓柟娉曞疄闄呬笂鏄繍鐢ㄤ簡涔樻硶鍒嗛厤寰嬶紝灏嗙浉鍚屽洜鏁版彁鍙栧嚭鏉ワ紝鑰冭瘯涓線寰鍓╀笅鐨勯」鐩稿姞鍑忥紝浼氬嚭鐜颁竴涓暣鏁般2銆佸熸潵鍊熷幓娉曪細鐪嬪埌鍚嶅瓧锛屽氨鐭ラ亾杩欎釜鏂规硶鐨勫惈涔夈傜敤姝ゆ柟娉曟椂锛岄渶瑕佹敞鎰忚瀵燂紝鍙戠幇瑙勫緥銆3...
绛旓細25脳25=2脳3脳100+25=625銆傚彟涓句袱渚嬶細35²鈥斺3脳4寰12锛屽悗闈㈠啓涓25寰1225锛 85²鈥斺8脳9寰72鍐嶅啓涓25寰7225銆
绛旓細25脳20鐒跺悗鍔犱笂5脳25
绛旓細25脳25鐨勫阀绠楁柟娉曞涓:浠ョ珫寮忕殑鏂瑰紡璁茶В锛鍏堜釜浣5鍜5鐩镐箻锛屽湪涓綅5涓嬮潰鍐25锛岀劧鍚庢槸鍗佷綅2鍜2鐩镐箻寰4锛4鍐嶅姞2寰6锛屽湪鍗佷綅2涓嬮潰鍐6銆傛渶鍚庢槸625锛屽氨鏄25脳25鐨勭Н銆備篃鍙互涓綅5涔5寰25锛屽崄浣2脳3锛(鍘熸潵鏄2脳2鍐嶅姞涓涓2灏辨槸3涓2锛夈傝繖绉嶆柟娉曢傚悎鎵鏈夊15脳15銆25脳25銆35脳35銆45脳45...
绛旓細25X25鐨勭珫寮忓涓嬪浘 25X25=625
绛旓細x25鎬庝箞绠渚胯绠 瑙ｇ瓟锛1銆佸厛鐪嬪彟涓涓暟鑳戒笉鑳芥媶鍑4锛岀敤涔樻硶缁撳悎寰嬬畻 2銆佸鏋滅背鏈夛紝鎶25鎷嗗紑 3銆佸鏋滄槸褰㈠锛歛*c+b*c鐨勭畻寮忥紝鍙互鐢ㄤ箻娉曞垎閰嶅緥
绛旓細42x25梅42x25 =42梅42x25x25 =1x25x25 =625 25x25,鏈袱浣嶆槸5*5=25,鏈楂樹綅鏄2*锛2+1锛=6,鎵浠ユ槸625
绛旓細瑙ｅ師寮=25脳(15+25)=25脳40=1000.
绛旓細42x25梅42x25 =42梅42x25x25 =1x25x25 =625 25x25锛屾湯涓や綅鏄5*5=25锛屾渶楂樹綅鏄2*锛2+1锛=6锛屾墍浠ユ槸625
