2的一倍是多少?2的两倍又是多少?
\u4e00\u500d\u548c\u4e24\u500d\u662f\u4ec0\u4e48\u610f\u601d\uff1f5\u7684\u4e00\u500d\u662f\u591a\u5c11\u4e24\u500d\u53c8\u662f\u591a\u5c11?\u4e3e\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u8bf4\u660e 2\u76841\u500d\u662f2\uff0c2\u76842\u500d\u5c31\u662f4 \u4e5f\u5c31\u662f\u8bf4\u4e00\u4e2a\u6570x x\u76841\u500d\u7b49\u4e8ex*1=x\uff0c\u662f\u5b83\u672c\u8eab x\u76842\u500d\u7b49\u4e8ex*2=2x\uff0c\u6bd41\u500d\u591a1\u500d\u3002
\u4e00\u500d\u662f\u6307\u4e00\u4e2a\u6570\u4e58\u4e00\uff0c\u4e5f\u5c31\u662f\u4e0e\u8fd9\u4e2a\u6570\u76f8\u540c\u7684\u6570\u3002\u53cc\u500d\u5c31\u662f\u4e24\u500d\uff0c\u6307\u4e00\u4e2a\u6570\u4e58\u4e8c\u3002 \u6bd4\u5982\uff1a2\u7684\u4e00\u500d\u662f2\uff0c2\u7684\u53cc\u500d\u662f4\u3002\u4f46\u662f\u5982\u679c\u8bf4\u591a\u4e00\u500d\uff0c\u90a3\u4e48\u5c31\u4e0d\u662f\u4e00\u500d\u7684\u6982\u5ff5\u4e86\uff0c\u6bd4\u59824\u6bd42\u591a\u4e00\u500d\uff0c\u4e5f\u5c31\u662f\u8bf44=2+2=2\u00d72\u3002 \u4e00\u822c\u6765\u8bf4\uff0c\u8bf44\u662f2\u7684\u4e00\u500d\u662f\u4e00\u79cd\u901a\u4fd7\u3001\u7701\u7565\u7684\u8bf4\u6cd5\u3002
5\u76841\u500d\u8fd8\u662f5\uff0c5\u4e58\u4ee52 ,\u6570\u7684\u4e00\u500d\u662f\u5176\u672c\u8eab\uff0c\u500d\u5c31\u50cf\u662f"\u4efd"\u7684\u610f\u601d. \u4e00\u500d\u4e0e\u4e8c\u500d\u7684\u533a\u522b\u5c31\u53ef\u4ee5\u7406\u89e3\u6210\u4e00\u4efd\u4e0e\u4e24\u4efd\u7684\u533a\u522b\u4e86\u30025\u7684\u4e00\u500d\u662f5 5\u589e\u52a0\u4e00\u500d\u662f10\u3002
\u4e00\u4e2a\u6574\u6570\u80fd\u591f\u88ab\u53e6\u4e00\u4e2a\u6574\u6570\u6574\u9664\uff0c\u8fd9\u4e2a\u6574\u6570\u5c31\u662f\u53e6\u4e00\u6574\u6570\u7684\u500d\u6570\u3002\u598215\u80fd\u591f\u88ab3\u62165\u6574\u9664\uff0c\u56e0\u6b6415\u662f3\u7684\u500d\u6570\uff0c\u4e5f\u662f5\u7684\u500d\u6570\u3002 \u4e00\u4e2a\u6570\u9664\u4ee5\u53e6\u4e00\u6570\u6240\u5f97\u7684\u5546\u3002\u5982a\u00f7b=c\uff0c\u5c31\u662f\u8bf4\uff0ca\u662fb\u7684\u500d\u6570\u3002
2\u7684\u4e00\u500d\u662f2 2\u76842\u500d\u662f4
\u8fd9\u662f\u4e2a\u5f88\u7b80\u5355\u7684\u95ee\u9898,2\u7684\u4e00\u500d\u662f\u591a\u5c11,\u6b63\u786e\u7b54\u6848\u6309\u5b57\u9762\u7406\u89e3\u548c\u6587\u5b57\u610f\u601d\u662f2X1=2,3,\u662f\u65e0\u8bba\u600e\u4e48\u7b97\u90fd\u4e0d\u53ef\u80fd\u51fa\u6765\u7684\u7b54\u6848,\u4e0d\u8fc7\u6309\u7167\u4e2d\u56fd\u4eba\u7684\u610f\u601d,\u7ffb\u4e00\u7ffb,\u500d\u4e00\u500d\u7684\u610f\u601d\u5c31\u662fX2,\u6bd4\u5982\u8bf4\u4ec0\u4e48\u4ea7\u91cf\u7ffb\u4e00\u7ffb,\u500d\u4e00\u500d,\u5c31\u662fX2.\u6240\u4ee5\u6309\u7167\u7406\u8bba=2,\u6309\u7167\u4e2d\u56fd\u4eba\u8bf4\u8bdd\u7684\u5b9e\u4f8b\u5c31\u662fX2=4\u3002
2*1=2
2*2=4
2
4
绛旓細鑰岋紝4梅2=2锛屽洜姝わ紝2鐨2鍊嶆槸4銆
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绛旓細浜屽鐨勪簩鍊灏辨槸2*2鍗4鍊 鎵浠ヤ簩鍊鐨勪竴鍊灏辨槸2*1杩樻槸2鍊
绛旓細2鐨勪竴鍊嶆槸2.2鐨2鍊嶆槸4 浣犵殑鐞嗚В搴旇鏄瘮2澶т竴鍊嶇殑鏄4,鎴栬呰鎴2鐨勫嶆暟鏄4.濡傛灉鏈夊湴鏂硅2鐨勪竴鍊嶆槸4閭ｆ槸鐢熸椿鍖栫敤璇,绾补涔辫涓嶇瀛︾殑.濡傛灉鍗曠嫭闂2鐨勪竴鍊,灏辨槸2涔樹互1,鏄2.2鐨勫嶆暟鏈2锛4锛6锛8绛夌瓑銆傛湯灏炬暟瀛楁槸0锛2锛4锛6锛8涓殑鍏朵腑涓涓紝骞朵笖涓嶆槸0鐨勬暟涓瀹氭槸2鐨勫嶆暟锛屽洜涓2鐨勫嶆暟涓...
绛旓細2涔樹互1绛変簬2锛屾墍浠2鐨勪竴鍊嶆槸2銆2涔樹互2绛変簬4锛屾墍浠2鐨勪袱鍊嶆槸4銆備互姝ょ被鎺ㄦ槸澶氬皯鍊嶅氨鏄箻浠ュ嚑寰楀埌鐨勬暟瀛楀氨鏄畠鐨勫嶆暟銆
绛旓細2鐨勪竴鍊鍜涓ゅ鍒嗗埆鏄灏戯紵瑙ｆ瀽 2鐨勪竴鍊嶏細2脳1=2 涓ゅ:2脳2=4
绛旓細涓鍊嶆槸鎸囦竴涓暟涔樹竴锛屼篃灏辨槸涓庤繖涓暟鐩稿悓鐨勬暟銆傚弻鍊嶅氨鏄袱鍊嶏紝鎸囦竴涓暟涔樹簩銆傛瘮濡傦細2鐨勪竴鍊嶆槸2锛2鐨勫弻鍊嶆槸4銆備絾鏄鏋滆澶氫竴鍊锛岄偅涔堝氨涓嶆槸涓鍊嶇殑姒傚康浜嗭紝姣斿4姣2澶涓鍊嶏紝涔熷氨鏄4=2+2=2脳2銆備竴鑸潵璇达紝璇4鏄2鐨勪竴鍊嶆槸涓绉嶉氫織銆佺渷鐣ョ殑璇存硶銆5鐨1鍊嶈繕鏄5锛5涔樹互2 ,鏁扮殑涓鍊嶆槸鍏舵湰韬...
绛旓細2鐨1鍊嶆槸2*1=2 2鐨勪袱鍊嶆槸2*2=4
绛旓細2鐨勪竴鍊嶆槸2銆傛牴鎹嶆暟鐨勫畾涔夛紝涓涓暟闄や互鍙︿竴鏁版墍寰楃殑鍟嗐傚a梅b=c锛屽氨鏄锛宎鏄痓鐨勫嶆暟銆備緥濡傦細A梅B=C锛屽氨鍙互璇碅鏄疊鐨凜鍊嶃傝岋紝2梅2=1锛屼篃灏辨槸璇2鏄2鐨1鍊嶃傝岋紝4梅2=2锛屽洜姝わ紝2鐨2鍊嶆槸4銆
绛旓細2鐨勪竴鍊嶆槸2+2=4锛2鐨勪簩鍊鏄2+锛2脳2锛=6锛2鐨勪笁鍊嶆槸2+锛2脳3锛=8銆備竴涓暣鏁拌兘澶熻鍙︿竴涓暣鏁版暣闄わ紝杩欎釜鏁存暟灏辨槸鍙︿竴鏁存暟鐨勫嶆暟銆傚15鑳藉琚3鎴5鏁撮櫎锛屽洜姝15鏄3鐨勫嶆暟锛屼篃鏄5鐨勫嶆暟銆備竴涓暟闄や互鍙︿竴鏁版墍寰楃殑鍟嗐傚a梅b=c锛屽氨鏄锛宎鏄痓鐨勫嶆暟銆備緥濡傦細A梅B=C锛屽氨鍙互璇碅鏄疊鐨...
