分数除法怎么做？ 分数除法怎么做
\u5206\u6570\u9664\u6cd5\u600e\u4e48\u505a???\u5206\u6570\u7684\u9664\u6cd5
1.\u610f\u4e49\uff1a\u5df2\u77e5\u4e24\u4e2a\u56e0\u6570\u7684\u79ef\u4e0e\u5176\u4e2d\u4e00\u4e2a\u56e0\u6570\uff0c\u6c42\u53e6\u4e00\u4e2a\u56e0\u6570\u7684\u8fd0\u7b97\u30022.\u5206\u6570\u9664\u6cd5\u600e\u4e48\u7b97\uff1a\u7532\u6570\u9664\u4ee5\u4e59\u6570\u7b49\u4e8e\u7532\u6570\u4e58\u4e59\u6570\uff080\u9664\u5916\uff09\u7684\u5012\u6570\u30023.\u5546\u4e0e\u88ab\u9664\u6570\u7684\u5927\u5c0f\u5173\u7cfb\uff1a
\uff082\uff090\u9664\u4ee5\u4efb\u4f55\u6570\uff080\u9664\u5916\uff09\u90fd\u5f9704.\u5206\u6570\u9664\u52a0\u3001\u9664\u51cf\u7684\u8fd0\u7b97\u987a\u5e8f\uff1a\u5982\u679c\u6ca1\u6709\u62ec\u53f7\uff0c\u5e94\u5148\u7b97\u9664\u6cd5\uff0c\u540e\u7b97\u52a0\u3001\u51cf\u6cd5\u30025.\u8fde\u9664\u7684\u8ba1\u7b97\u65b9\u6cd5\uff1a\u53ef\u4ee5\u5148\u5206\u6b65\u8f6c\u5316\u4e3a\u4e58\u6cd5\uff0c\u518d\u7ea6\u5206\u8ba1\u7b97\uff1b\u4e5f\u53ef\u4ee5\u4e00\u6b21\u90fd\u8f6c\u5316\u6210\u4e58\u6cd5\uff0c\u518d\u7ea6\u5206\u8ba1\u7b97\u3002
\u5206\u6570\u9664\u4ee5\u6574\u6570
\u5206\u6570\u9664\u4ee5\u6574\u6570\uff0c\u5206\u6bcd\u4e0d\u53d8\uff0c\u5982\u679c\u5206\u5b50\u662f\u6574\u6570\u7684\u500d\u6570\uff0c\u5219\u7528\u5206\u5b50\u9664\u4ee5\u6574\u6570\uff0c\u6700\u540e\u4e0d\u662f\u6700\u7b80\u5206\u6570\u8981\u5316\u6210\u6700\u7b80\u5206\u6570\u3002
\u4f8b1\uff1a4/15\u00f72=4/15\u00d71/2=2/15
\u4f8b2\uff1a42/30\u00f77=42/30\u00d71/7=1/5
\u6574\u6570\u9664\u4ee5\u5206\u6570
\u5206\u6570\u9664\u6cd5\u6362\u7b97\u6210\u5206\u6570\u4e58\u6cd5\u3002\u4e00\u4e2a\u5206\u6570\u9664\u53e6\u4e00\u4e2a\u5206\u6570\u7b49\u4e8e\u4e58\u4ee5\u8fd9\u4e2a\u5206\u6570\u7684\u5012\u6570\uff0c\u6574\u6570\u53ef\u4ee5\u5316\u6210\u5206\u6bcd\u4e3a1\u7684\u5047\u5206\u6570\u3002
\u4f8b\uff1a21\u00f71/3=21\u00d73=63
方法如图所示
分数的除法
绛旓細鍏紡锛歛/b梅c/d=a/b脳d/c銆傚垎鏁伴櫎娉曟槸鍒嗘暟涔樻硶鐨勯嗚繍绠椼傚垎鏁伴櫎娉曡绠楁硶鍒欙細鐢叉暟闄や互涔欐暟锛0闄ゅ锛夛紝绛変簬鐢叉暟涔樹箼鏁扮殑鍊掓暟銆傚綋闄ゆ暟灏忎簬1锛屽晢澶т簬琚櫎鏁帮紱褰撻櫎鏁扮瓑浜1锛屽晢绛変簬琚櫎鏁帮紱褰撻櫎鏁板ぇ浜1锛屽晢灏忎簬琚櫎鏁般傚垎鏁扮敳闄や互鍒嗘暟涔欏氨鏄垎鏁扮敳涔樹互鍒嗘暟涔欑殑鍊掓暟銆
绛旓細鍒嗘暟鐨勯櫎娉曞彲浠ョ畝鍗曞啓鎴愪竴涓垎鏁伴櫎浠ュ彟涓涓垎鏁扮瓑浜庝竴涓垎鏁颁箻浠ュ彟涓涓垎鏁扮殑鍊掓暟銆傛暟瀛﹁〃杈惧紡锛a/b梅c/d=a/b脳d/c銆備緥濡傦細鎴戜滑瑕佹眰1/2闄や互1/3锛屽嵆姹1/2脳1锛1/3锛=1/2脳3=3/2銆
绛旓細鍒嗘暟闄ゆ硶娉曞垯锛氬垎鏁扮敳闄や互鍒嗘暟涔欏氨鏄垎鏁扮敳涔樹互鍒嗘暟涔欑殑鍊掓暟銆a/b梅c/d=a/b脳d/c濡锛
绛旓細鍒嗘暟闄や互鍒嗘暟鐨勭畻娉曟槸锛氱敤杩欎釜鍒嗘暟涔樹互琚櫎鍒嗘暟鐨勫掓暟銆傞鍏堟槸鎵惧埌涓涓垎鏁伴櫎浠ュ垎鏁扮殑杩愮畻锛屾瘮濡傦紝琚櫎鏁版槸2/3锛岄櫎鏁版槸5/7銆傜劧鍚庤闄ゆ暟闄や互闄ゆ暟绛変簬琚櫎鏁颁箻浠ラ櫎鏁扮殑鍊掓暟锛屽掓暟鏄垎瀛愬綋鍒嗘瘝锛屽垎姣嶅綋鍒嗗瓙銆傛渶鍚庨櫎娉曞彉鎴愬垎鏁扮殑涔樻硶锛屾寜鐓т箻娉曡繍绠楀師鍒欙紝鍒嗗瓙涔樺垎瀛愶紝鍒嗘瘝涔樺垎姣嶃傚垎鏁伴櫎娉曡繍鐢ㄩ櫎娉曞師鍒欙紝鐢ㄥ掓暟鏉...
绛旓細鍒嗘暟闄や互鏁存暟锛屽垎姣嶄笉鍙橈紝濡傛灉鍒嗗瓙鏄暣鏁扮殑鍊嶆暟锛屽垯鐢ㄥ垎瀛愰櫎浠ユ暣鏁帮紝鏈鍚庝笉鏄渶绠鍒嗘暟瑕佸寲鎴愭渶绠鍒嗘暟銆備緥1锛4/15梅2=4/15脳1/2=2/15 渚2锛42/30梅7=42/30脳1/7=1/5 鏁存暟闄や互鍒嗘暟 鍒嗘暟闄ゆ硶鎹㈢畻鎴愬垎鏁颁箻娉曘備竴涓垎鏁伴櫎鍙︿竴涓垎鏁扮瓑浜庝箻浠ヨ繖涓垎鏁扮殑鍊掓暟锛屾暣鏁板彲浠ュ寲鎴愬垎姣嶄负1鐨勫亣鍒嗘暟銆備緥锛...
绛旓細鍒嗘暟鐨闄ゆ硶鍙互绠鍗曞啓鎴愪竴涓垎鏁伴櫎浠ュ彟涓涓垎鏁扮瓑浜庝竴涓垎鏁颁箻浠ュ彟涓涓垎鏁扮殑鍊掓暟銆傛暟瀛﹁〃杈惧紡锛歛/b+c/d=a/bxd/c銆備緥濡傦細鎴戜滑瑕佹眰1/2闄や互1/3锛屽嵆姹1/2x1(1/3)=1/2x3=3/2銆傛瘮濡備笁鍒嗕箣浜岄櫎浠ヤ笁鍒嗕箣涓锛屾妸鍚庨潰閭ｄ釜锛屼篃灏辨槸涓夊垎涔嬩竴鍒嗗瓙鍋氬垎姣嶏紝鍒嗘瘝鍋氬垎瀛愶紝鎴愪簡涓鍒嗕箣涓夛紝鍦ㄧ敤涓夊垎涔嬩簩...
绛旓細鏂规硶涓鈭跺垎姣嶆瘮鍒嗗瓙澶1 鍒嗘瘝鍔犱笂2浠ュ悗锛屾瘮鍒嗗瓙澶1+2=3 鍒嗗瓙涓猴細3梅锛3-2锛壝2=6 鍘熸潵鍒嗘瘝涓猴細6+1=7 鍘熸潵鍒嗘暟涓6/7 鏂规硶浜岋細璁惧垎瀛愪负x锛屽垎姣嶄负x+1 x/x+1+2=2/3 x/x+3=2/3 3x=2x+6 x=6 x+1=6+1=7 鎵浠ュ師鍒嗘暟鏄6/7 ...
绛旓細鍒嗘瘝鐨勪箻绉仛鍒嗘瘝銆傚垎瀛愬垎姣嶈兘绾﹀垎鐨勭害鍒嗭紝褰撳垎瀛愬ぇ浜庡垎姣嶆椂锛屽鏋滆姹傚寲涓哄甫鍒嗘暟鐨勫彲杩涗竴姝ュ寲鎴愬甫鍒嗘暟銆鍒嗘暟闄ゆ硶鐨勮绠楁硶鍒欙細鐢叉暟闄や互涔欐暟锛0闄ゅ锛夛紝绛変簬鐢叉暟涔樹箼鏁扮殑鍊掓暟銆傚綋闄ゆ暟灏忎簬1锛屽晢澶т簬琚櫎鏁帮紱褰撻櫎鏁扮瓑浜1锛屽晢绛変簬琚櫎鏁帮紱褰撻櫎鏁板ぇ浜1锛屽晢灏忎簬琚櫎鏁般傝闄ゆ暟涔橀櫎鏁扮殑鍊掓暟鑳界害鍒嗙殑瑕佺害鍒嗐
绛旓細鏈夋嫭鍙峰厛绠楁嫭鍙烽噷闈㈢殑锛屽厛澶у悗灏 鍒嗘暟闄ゆ硶锛氶櫎浠ヤ竴涓暟绛変簬涔樹互杩欎釜鏁扮殑鍊掓暟 浠 5/6 梅3/15 涓轰緥 涓夋璧 1銆佸彉梅涓好 2銆佸彉鍊掓暟 3銆鍋氬垎鏁涔樻硶 5/6梅3/15 =5/6 脳15/3 =鑷繁鍋 锛堟湜閲囩撼锛岃阿璋級
