一本书有43页，小刚每天看5页，至少几天他能把这本书看完？ 扩展提高。一本书有27页，每天看5页，至少要几天才能看完？
\u4e00\u672c\u4e66\u517133\u9875,\u6bcf\u5929\u770b5\u9875,\u81f3\u5c11\u9700\u8981\u51e0\u5929\u770b\u5b8c?\u5982\u679c6\u5929\u770b\u5b8c,\u4f60\u6253\u7b97\u600e\u6837\u5b89\u6392?33\u00f75\uff1d6\u2026\u20263\uff0c6+1\uff1d7(\u5929) \u81f3\u5c117\u5929\u770b\u5b8c\u3002
33\u00f76\uff1d5\u2026\u20263\uff0c5+1\uff1d6\uff08\u9875\uff09\u5982\u679c\u516d\u5929\u770b\u5b8c\uff0c\u6bcf\u5929\u8981\u770b\u516d\u9875\u624d\u884c\u3002
\u4eb2\uff0c\u6ee1\u610f\u7ed9\u4e2a\u91c7\u7eb3\u5457\u3002
27\u00f75=5\uff08\u5929\uff09\u2026\u20262\uff08\u9875\uff09
5+1=6\uff08\u5929\uff09
\u7b54\uff1a\u81f3\u5c11\u89816\u5929\u624d\u80fd\u770b\u5b8c\u3002
\u6269\u5c55\u8d44\u6599\u201c\u56db\u820d\u4e94\u5165\u201d\u65b9\u6cd5\uff1a
\u6bd4\u4fdd\u7559\u7684\u4f4d\u6570\u591a\u770b\u4e00\u4f4d\uff0c\u8be5\u4f4d\u4e0a\u7684\u6570\u5b57\u662f\u201c5\u201d\u6216\u8005\u6bd4\u201c5\u201d\u5927\uff0c\u5411\u524d\u8fdb\u4e00\uff0c\u8be5\u4f4d\u4e0a\u7684\u6570\u5b57\u662f\u201c4\u201d\u6216\u8005\u6bd4\u201c4\u201d\u5c0f\uff0c\u5c31\u820d\u53bb\u3002
\u4f8b\u5982\uff1a6.56\uff0c\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff0c\u5c31\u662f6.6\uff1b\u800c6.54\uff0c\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff0c\u5c31\u662f6.5\u3002
\u5728\u53d6\u5c0f\u6570 \u8fd1\u4f3c\u6570\u7684\u65f6\u5019\uff0c\u5982\u679c\u5c3e\u6570\u7684\u6700\u9ad8\u4f4d\u6570\u5b57\u662f4\u6216\u8005\u6bd44\u5c0f\uff0c\u5c31\u628a\u5c3e\u6570\u53bb\u6389\u3002\u5982\u679c\u5c3e\u6570\u7684\u6700\u9ad8\u4f4d\u6570\u662f5\u6216\u8005\u6bd45\u5927\uff0c\u5c31\u628a\u5c3e\u6570\u820d\u53bb\u5e76\u4e14\u5728\u5b83\u7684\u524d\u4e00\u4f4d\u8fdb"1",\u8fd9\u79cd\u53d6\u8fd1\u4f3c\u6570\u7684\u65b9\u6cd5\u53eb\u505a\u56db\u820d\u4e94\u5165\u6cd5\u3002
\u300a \u4e5d\u7ae0\u7b97\u672f\u300b\u91cc\u4e5f\u91c7\u7528\u201c\u56db\u820d\u4e94\u5165\u201d\u7684\u65b9\u6cd5\uff0c\u5728\u7528\u6bd4\u4f8b\u6cd5\u6c42\u5404\u53bf\u5e94\u51fa\u7684\u8f66\u8f86\u65f6\uff0c\u56e0\u4e3a\u8f66\u8f86\u662f\u6574\u6570\uff0c\u4ed6\u4eec\u5c31\u91c7\u7528\u56db\u820d\u4e94\u5165\u7684\u65b9\u6cd5\u5bf9\u6f14\u7b97\u7ed3\u679c\u52a0\u4ee5\u5904\u7406\u3002
绛旓細鍏堟眰鐪嬩簡澶氬皯 5*8=40椤 鍐嶆眰鍓╀笅鐨 100-40=60椤
绛旓細5涔9=45锛54鎵浠ヤ笉鑳
绛旓細涓鏈鏁呬簨涔︽湁140椤碉紝浠姣忓ぉ鐪嬩簲椤鐨勮瘽锛屼竴鍏遍渶瑕佺湅鍒板ぉ涔︼紝灏辨槸140梅5灏辩瓑浜28澶┿28澶╁氨鏄洓涓槦鏈燂紝鎵浠ヤ粬鍥涗釜鏄熸湡灏卞彲浠ョ湅瀹岃繖鏈功銆
绛旓細涓嶈兘鍚э紝浜斾節鍥涘崄浜旓紝54椤电湅涓嶅畬鍝
绛旓細璁緓澶 5x=280-55 x=45
绛旓細姣忓ぉ鐪5椤碉紝灏戜笁椤点涓鏈功鏈25-35椤点傛墍浠ワ紙5鐨勫嶆暟鍑3锛夎鏄兘鏁撮櫎浠5鐨勩5*7=35锛35-3=32椤 5*6=30锛30-3=27椤 鎵浠ヨ繖鏈功鍙兘鏄27椤垫垨32椤点
绛旓細涓鏈功鏈87椤碉紝灏忓垰姣忓ぉ鐪20椤碉紝闇瑕5澶╂墠鑳界湅瀹屻備竴鏈功鏈87椤碉紝灏忓垰姣忓ぉ鐪20椤碉紝鍒欓渶瑕87闄や互20绛変簬4.35澶╋紝澶╂暟閮芥槸鏁存暟锛4.35澶╁彇鏁存暟锛屽嵆鏄5澶┿
绛旓細闂鍛紵锛侊紒
绛旓細涓鍏辨湁锛5X7+45=80椤
绛旓細涓鏈功鏈42椤碉紝灏忔槑姣忓ぉ鐪9椤碉紝鑷冲皯闇瑕佸灏戝ぉ鎵嶈兘灏嗚繖鏈功鐪嬪畬锛燂紙鐢ㄥ姞锛屽噺娉曡绠楋級瑙ｆ瀽锛氬姞娉曪細9+9+9+9+6=42锛堥〉锛夌瓟锛氳嚦灏戦渶瑕5澶╂墠鑳藉皢杩欐湰涔︾湅瀹屻傚噺娉曪細42-9-9-9-9-6=0锛堥〉锛夌瓟锛氳嚦灏戦渶瑕5澶╂墠鑳藉皢杩欐湰涔︾湅瀹屻
