四个4运用加减乘除，怎么才能等于4。 要具体过程。
\u56db\u4e2a4\u8fd0\u7528\u52a0\u51cf\u4e58\u9664\uff0c\u600e\u4e48\u624d\u80fd\u7b49\u4e8e4\u3002\u8981\u5177\u4f53\u8fc7\u7a0b\u3002\uff084\uff0d4\uff09\uff0a4\uff0b4\uff1d4
\u6ee1\u610f\u8bf7\u91c7\u7eb3
\u4e0a\u4e0b\u5de6\u53f3\u52a0\u51cf\u4e58\u9664\u90fd\u7b49\u4e8e\u56db\u7684\u7b97\u6cd5\uff1a
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u9053\u9898\u7684\u8fd0\u7b97\u89c4\u5219\u662f\u4ece\u5de6\u81f3\u53f3\uff0c\u4ece\u4e0a\u81f3\u4e0b\uff0c\u4e0d\u662f\u6309\u7167\u5148\u4e58\u9664\u540e\u52a0\u51cf\u7684\u539f\u5219\u3002
\u6240\u4ee5\uff0c\u6700\u7ec8\u7b54\u6848\u662f\uff1a
5 8 9
7 6 4
3 2 1
\u62d3\u5c55\u8d44\u6599\u52a0\u51cf\u4e58\u9664\u6cd5\u662f\u57fa\u672c\u7684\u56db\u5219\u8fd0\u7b97\uff0c\u7b26\u53f7\u4f9d\u6b21\u4e3a\u201c+\uff0d\u00d7\u00f7\u201d\uff0c\u5728\u6ca1\u6709\u62ec\u53f7\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd0\u7b97\u987a\u5e8f\u4e3a\u5148\u4e58\u9664\uff0c\u518d\u52a0\u51cf\u3002
\u5546\u516c\u5f0f\u662f\uff1a(\u88ab\u9664\u6570-\u4f59\u6570)\u00f7\u9664\u6570=\u5546\uff0c\u8bb0\u4f5c\uff1a\u88ab\u9664\u6570\u00f7\u9664\u6570=\u5546\u00b7\u00b7\u00b7 \u00b7\u00b7\u00b7\u4f59\u6570\uff0c\u662f\u4e00\u79cd\u6570\u5b66\u672f\u8bed\u3002
\u5728\u4e00\u4e2a\u9664\u6cd5\u7b97\u5f0f\u91cc\uff0c\u88ab\u9664\u6570\u3001\u4f59\u6570\u3001\u9664\u6570\u548c\u5546\u7684\u5173\u7cfb\u4e3a\uff1a(\u88ab\u9664\u6570-\u4f59\u6570)\u00f7\u9664\u6570=\u5546\uff0c\u8bb0\u4f5c\uff1a\u88ab\u9664\u6570\u00f7\u9664\u6570=\u5546\u00b7\u00b7\u00b7 \u00b7\u00b7\u00b7\u4f59\u6570\uff0c\u8fdb\u800c\u63a8\u5bfc\u5f97\u51fa\uff1a\u5546\u00d7\u9664\u6570+\u4f59\u6570=\u88ab\u9664\u6570\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-\u52a0\u51cf\u4e58\u9664\u6cd5
（4－4）＊4＋4＝4
绛旓細4梅(4锛4)脳4=2 4梅(4锛4)脳4=2 4梅(4锛4)脳4=2 4脳4梅(4锛4)=2 (4梅4)锛4梅4=2 4梅4锛(4梅4)=2 4梅4锛4梅4=2 4鈥(4锛4)梅4=2 (4梅4)锛4梅4=2 4梅4锛(4梅4)=2 4梅4锛4梅4=2 4鈥(4锛4)梅4=2 4脳4梅(4锛4)=2 4脳4梅(4锛4)=2 (4梅4)...
绛旓細锛4锛4锛夛紛4锛4锛4 婊℃剰璇烽噰绾
绛旓細4²-锛4²+4锛壝4=11 4+4+鈭4+鈭4=12 4²-锛4+鈭4锛壝封垰4=13 4+4+4+鈭4=14 4x4-4梅4=15 4x4+4-4=16 4x4+4梅4=17 4x4+4梅鈭4=18 4²+锛4+鈭4锛壝封垰4=19
绛旓細4x4-4梅4=15 4x4-4梅4 =16-1 =15 璋㈣阿锛岃閲囩撼
绛旓細4梅4+4梅4=2 (4+4+4)梅4=3 4+(4-4)脳4=4 (4+4脳4)梅4=5 4+(4+4)梅4=6 4+4-4梅4=7 4脳4梅4+4=8 4+4+4梅4=9
绛旓細涓鐢鎷彿 鎴戣В涓嶅嚭 涓嶉檺鍒跺氨绠鍗 锛4-4锛/4+4=4 4*(4-4)+4=4 鍝堝搱 鍥版壈浜虹殑涓涓鍟 鑲畾鏄釜灏忓鐢熼.涓嶇敤鎷彿灏辨槸鍋氫笉鍑烘潵.浣嗘槸鍑轰簡灏忓姘村钩鐨勯檺鍒,鏄彲浠ュ仛鍑烘潵鐨.鈭4+鈭4-鈭4+鈭4=4 鍠,鑰佸ぇ,閭ｄ笉鏄鍙,閭ｆ槸鏍瑰彿~锛堜笉浼氭墦鏍瑰彿锛夊叾浠栫殑鏂规硶灏辨病鏈変簡 ...
绛旓細(4+4+4)梅4=3 (4脳4-4)梅4=3 鑰冨療瀛︾敓鐨鍥涘垯杩愮畻鑳藉姏锛屽彛绠楄兘鍔涖傝缁冨鐢熸濈淮鐨勭伒娲绘с
绛旓細(44-4)/4=10
绛旓細(44-4)梅4 =40梅4 =10
绛旓細(44-4)/4 44鍑忓幓4浠ュ悗鍐嶉櫎浠4绛変簬10銆傚搱鍝堝搱锝烇綖锝炴垜鐨25鍒嗭紒璋㈣阿銇侀洦銇侊紒锛侊紒
