甲乙两数的比是4:7,那么甲数比乙数少?乙数比甲数多? 甲乙两个数的比是4:7那么甲数比乙数少几分之几乙数比甲数多几...
\u7532\u6570\u6bd4\u4e59\u6570\u591a1/4\uff0c\u4e59\u6570\u5c31\u6bd4\u7532\u6570\u5c111/4\uff0c\u5bf9\u5417\u4e0d\u5bf9
\u7532\u6570\u6bd4\u4e59\u6570\u591a1/4\uff0c\u662f\u4ee5\u4e59\u6570\u4e3a\u57fa\u51c61\uff0c\u7532=5/4\u4e59
\u4e59\u6570\u6bd4\u7532\u6570\u5c11\uff0c\u5c31\u662f\u4ee5\u7532\u6570\u4e3a\u57fa\u51c61\uff0c\u4e59=4/5\u7532\uff0c\u4e59\u6bd4\u7532\u5c11\uff1a1-4/5=1/5
\u7532\u6bd4\u4e59\u5c11\uff1a\uff087-4\uff09\u00f77=7\u5206\u4e4b3
\u591a\uff1a\uff087-4\uff09\u00f74=4\u5206\u4e4b3
\u4f53\u79ef\u51cf\u5c11\uff1a\uff0811\u5206\u4e4b1\uff09\u00f7\uff081+11\u5206\u4e4b1\uff09=12\u5206\u4e4b1
乙数比甲多多少?这个就是(乙-甲)/甲=(7-4)/4=3/4
由于A比B多或少多少,这个分子都是A-B或B-A,而分母是以后面那个数为准,比如说A比B,则B是分母,或B比A,以A为分母
甲乙两数比4:7,可知甲是4份,乙是7份
甲比乙少几分之几:(7-4)÷7=3/7
乙比甲多几分之几:(7-4)÷4=3/4
求A数比B数多或少几分之几,就是求A比B多或少的部分占单位1(B)的几分之几
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3/7 3/4
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绛旓細鐢叉暟涓庝箼鏁扮殑姣旀槸4锛7锛岀敳鏁版槸涔欐暟鐨勶紙7鍒嗕箣4锛夛紝涔鏁版槸鐢叉暟鐨(175 )%锛岀敳鏁版槸鐢层涔欎袱鏁涔嬪拰鐨( 36.4 )%锛屼箼鏁版槸鐢层佷箼涓ゆ暟涔嬪拰鐨( 63.6 )%銆(鐧惧垎鍙峰墠闈㈢殑鏁颁繚鐣欎竴浣嶅皬鏁)
绛旓細鐢叉暟鏄涔鏁扮殑7鍒嗕箣4锛涔鏁版槸鐢蹭箼涓ゆ暟鍜岀殑11鍒嗕箣7
绛旓細渚濋鎰忓垪寮忚绠9梅(7-4)脳(4+7)瑙i鎬濊矾锛氬簲鐢ㄩ涓叧閿瘝涓哄钩鍧囦竴鑸兘鏄娇鐢ㄩ櫎娉,浣跨敤鍊嶆暟涓鑸兘鏄娇鐢ㄤ箻娉,姣旇皝澶氭垨鑰呮瘮璋佸皯涓鑸兘鏄娇鐢ㄥ姞鍑忔硶,鏍规嵁鍏抽敭璇嶈繘琛屽簲鐢ㄥ垪寮 瑙i杩囩▼:9梅(7-4)脳(4+7)=9梅3脳11 =3脳11 =33 绛:鐢鍜涔欎袱鏁扮殑鍜屾槸33 ...
绛旓細鐢叉暟鏄箼鏁扮殑:4/7*100%=57.1 鐢叉暟鏄敳涔欎袱鏁鍜:4/(4+7)*100%==4/11*100%=36.4
绛旓細灏忓鍏勾绾ф暟瀛:鐢叉暟涔鏁扮殑姣旀槸4:7,鍒欑敳鏁版槸涔欐暟鐨勫嚑鍒嗕箣鍑,鐢叉暟姣涔欐暟灏戝嚑鍒嗕箣鍑,涔鏁版瘮鐢叉暟澶氬嚑鍒嗕箣鍑,鐢叉暟鏄敳涔欎袱鏁鍜岀殑鍑犲垎涔嬪嚑銆... 灏忓鍏勾绾ф暟瀛:鐢叉暟涔欐暟鐨勬瘮鏄4:7,鍒欑敳鏁版槸涔欐暟鐨勫嚑鍒嗕箣鍑,鐢叉暟姣斾箼鏁板皯鍑犲垎涔嬪嚑,涔欐暟姣旂敳鏁板鍑犲垎涔嬪嚑,鐢叉暟鏄敳涔欎袱鏁板拰鐨勫嚑鍒嗕箣鍑犮 灞曞紑...
绛旓細鍥犱负鐢蹭箼涓ゆ暟鐨勬瘮鏄4 : 7 鎵浠ヨ 鐢 = 4x , 涔 = 7x (4x + 20) : (7x - 20) = 5 : 6 6(4x + 20) = 5(7x - 20)24x + 120 = 35x - 100 35x - 24x = 120 + 100 11x = 220 x = 220 梅 11 x = 20 鐢 = 4x = 80 涔 = 7x = 140 ...
绛旓細鍥犱负鐢蹭箼涓ゆ暟鐨勬瘮鏄4 :7 鎵浠ヨ 鐢 = 4x ,涔 = 7x (4x + 20) :(7x - 20) = 5 :6 6(4x + 20) = 5(7x - 20)24x + 120 = 35x - 100 35x - 24x = 120 + 100 11x = 220 x = 220 梅 11 x = 20 鐢 = 4x = 80 涔 = 7x = 140 ...
绛旓細鐢叉槸涔欑殑4/7脳100%=57.1 鐢叉槸鍜岀殑4/锛4+7锛壝100%=36.4
绛旓細鐢叉暟锛20梅锛5/11-4/11)脳4/11=80 涔欐暟锛20梅锛5/11-4/11)脳7/11=140 濡傛灉瀵逛綘鏈夊府鍔╋紝璇烽噰绾炽傝阿璋紒锛侊紒
绛旓細4=7=11 44梅11=4 鐢叉暟4脳4=16 涔欐暟4脳7=28 濡傛灉宸15,鐢叉暟=15梅锛7-4锛壝4=5脳4=20