在一张设计图纸上涂上5cm的距离表示实际距离，600米的距离有一条沿街管区和市区的公路长一点四四千？ 帮帮忙解答几道数学题目
\u5728\u4e00\u5e451:500\u7684\u8bbe\u8ba1\u56fe\u7eb8\u4e0a\uff0c\u91cf\u5f97\u4e00\u4e2a\u5706\u5f62\u82b1\u5703\u7684\u534a\u5f84\u662f6\u5398\u7c73\uff0c\u8fd9\u4e2a\u82b1\u5703\u7684\u5b9e\u9645\u9762\u79ef\u548c\u5468\u957f\u5404\u662f\u591a\u5c11\uff1f\u5b9e\u9645\u534a\u5f84=6\u00d7500=3000\u5398\u7c73=30\u7c73
\u9762\u79ef=30\u00d730\u00d73.14=2826\u5e73\u65b9\u7c73
\u5468\u957f=2\u00d730\u00d73.14=188.4\u7c73
\u2474\u6bd4\u4f8b\u5c3a\u5206\u4e3a\uff08\u6570\u5b57\u6bd4\u4f8b\u5c3a \uff09\u548c\uff08\u7ebf\u6bb5\u6bd4\u4f8b\u5c3a \uff09\u3002
\u2475\u5728\u4e00\u5e45\u5730\u56fe\u4e0a\uff0c\u75283\u5398\u7c73\u7684\u7ebf\u6bb5\u8868\u793a18\u5343\u7c73\u7684\u5b9e\u9645\u8ddd\u79bb\uff0c\u8fd9\u5e45\u5730\u56fe\u7684\u6bd4\u4f8b\u5c3a\u662f\uff08 1\uff1a600000\uff09\u3002
\u2476 \u4e00\u5e62\u6559\u5b66\u5927\u697c\u5e73\u9762\u56fe\u7684\u6bd4\u4f8b\u5c3a\u662f1/200\uff0c\u8868\u793a\u5b9e\u9645\u8ddd\u79bb\u662f\u56fe\u4e0a\u8ddd\u79bb\u7684\uff08 200\uff09\u500d\u3002
\u2489\u8111\u7b4b\u8f6c\u8f6c\u8f6c\uff0c\u7b54\u6848\u5168\u4f1a\u9009\u3002
\u2474\u4e00\u4e2a\u7535\u5b50\u96f6\u4ef6\u7684\u5b9e\u9645\u957f\u5ea6\u662f2\u6beb\u7c73\uff0c\u753b\u5728\u56fe\u7eb8\u4e0a\u7684\u957f\u5ea6\u662f4\u5398\u7c73\uff0c\u8fd9\u5f20\u56fe\u7eb8\u7684\u6bd4\u4f8b\u5c3a\u662f\uff08A \uff09\u3002
A. 1\uff1a20 B.20\uff1a1 C. 2\uff1a1 D.1\uff1a2
0 60 120 180 240\u5343\u7c73
\u2475\u5730\u56fe\u4e0a\u7684\u7ebf\u6bb5\u6bd4\u4f8b\u5c3a\u662f \uff0c\u5b83\u8868\u793a\u7684\u6570\u503c\u6bd4\u4f8b\u5c3a\u662f\uff08\u6ca1\u770b\u5230 \uff09\u3002
\u25cf \u4f8b5\u53d8\u53d8\u53d8\uff0c\u52a8\u8111\u7ec3\u4e00\u7ec3
\u248d\u5728\u6bd4\u4f8b\u5c3a\u662f1/5000\u7684\u5730\u56fe\u4e0a\uff0c\u91cf\u5f97\u4e00\u6240\u5b66\u6821\u7684\u5e73\u9762\u56fe\u957f6\u5398\u7c73\uff0c\u5bbd4\u5398\u7c73\u3002\u8fd9\u6240\u5b66\u6821\u5b9e\u9645\u5360\u5730\u9762\u79ef\u662f\u591a\u5c11\u5e73\u65b9\u7c73\uff1f
6*5000=30000=0.3\u5343\u7c73
4*5000=20000=0.2\u5343\u7c73
0.3*0.2=0.06\u5343\u7c73
\u248e\u4e0b\u9762\u662f\u67d0\u5b66\u6821\u6559\u5b66\u697c\u7684\u5730\u57fa\u5360\u5730\u5e73\u9762\u56fe\uff0c\u8bf7\u91cf\u51fa\u56fe\u4e0a\u7684\u957f\u548c\u5bbd\uff0c\u518d\u7b97\u51fa\u6559\u5b66\u697c\u5730\u57fa\u5b9e\u9645\u7684\u957f\u548c\u5bbd\u548c\u6559\u5b66\u697c\u7684\u5360\u5730\u9762\u79ef\u3002\uff08\u56fe\u5f62\u663e\u793a\u4e0d\u51fa\uff0c\u6545\u7ed9\u51fa\u56fe\u5f62\u4fe1\u606f\u957f\u4e3a3cm,\u5bbd\u4e3a1.5cm\uff0c\u6bd4\u4f8b\u5c3a1\uff1a1500)
3*1500=4500cm=45m
1.5*1500=2250cm=22.5m
45*22.5=1012.5\u5343\u7c73
\u25cf \u4e00\u9898\u591a\u53d8\u5316\uff0c\u52a8\u8111\u89e3\u51b3\u5b83
\u248f\u5728\u6bd4\u4f8b\u5c3a\u662f1\uff1a6000000\u7684\u5730\u56fe\u4e0a\uff0c\u91cf\u5f97\u5357\u4eac\u5230\u5317\u4eac\u7684\u8ddd\u79bb\u662f15\u5398\u7c73\u3002\u5982\u679c\u628a\u5357\u4eac\u5230\u5317\u4eac\u7684\u8ddd\u79bb\u753b\u5728\u6bd4\u4f8b\u5c3a\u662f1\uff1a5000000\u7684\u5730\u56fe\u4e0a\uff0c\u5e94\u8be5\u753b\u591a\u5c11\u5398\u7c73\uff1f
15*6000000/5000000=18\u5398\u7c73
\u2490\u5728\u4e00\u5e45\u5730\u56fe\u4e0a\uff0c\u75285\u5398\u7c73\u7684\u8ddd\u79bb\u8868\u793a\u5b9e\u9645\u8ddd\u79bb1500\u5343\u7c73\u3002\u5728\u8fd9\u5e45\u5730\u56fe\u4e0a\u91cf\u5f97A\u3001B\u4e24\u5730\u7684\u8ddd\u79bb\u662f3.5\u5398\u7c73\uff0cA\u3001B\u4e24\u5730\u7684\u5b9e\u9645\u8ddd\u79bb\u662f\u591a\u5c11\u5343\u7c73\uff1f\u4e00\u6761640\u5343\u7c73\u7684\u9ad8\u901f\u516c\u8def\uff0c\u5728\u8fd9\u5e45\u5730\u56fe\u4e0a\u662f\u591a\u5c11\u5398\u7c73?
5cm/1500\u5343\u7c73=1\uff1a30000000
3.5*30000000=1050\u5343\u7c73
640\u5343\u7c73/30000000\u5398\u7c73=64/3\u5398\u7c73
\u3010\u62d3\u5c55\u5929\u5730\u3011 \u8fdb\u5165\u65b0\u5929\u5730\uff0c\u53d1\u6325\u4f60\u6f5c\u529b\uff01
\u25cf \u8eab\u8fb9\u6570\u5b66
\u2491\u5728\u6bd4\u4f8b\u5c3a\u662f1\uff1a5000000\u7684\u5730\u56fe\u4e0a\uff0c\u91cf\u5f97\u6c88\u9633\u548c\u91cd\u5e86\u4e24\u5730\u76f8\u8ddd6\u5398\u7c73\u3002\u5982\u679c\u7532\u3001\u4e59\u4e24\u8f86\u6c7d\u8f66\u540c\u65f6\u4ece\u4e24\u5730\u76f8\u5bf9\u51fa\u53d1\uff0c\u7532\u8f66\u6bcf\u5c0f\u65f6\u884c48\u5343\u7c73\uff0c\u4e59\u8f66\u6bcf\u5c0f\u65f6\u884c42\u5343\u7c73\u3002\u51e0\u5c0f\u65f6\u540e\u4e24\u8f66\u80fd\u76f8\u9047\uff1f
6*5000000=30000000\u5398\u7c73=300\u5343\u7c73
300/(42+48)=10/3\u5c0f\u65f6
\u2492\u5728\u6bd4\u4f8b\u5c3a\u662f1\uff1a2000000\u7684\u5730\u56fe\u4e0a\uff0c\u91cf\u5f97\u6d4e\u5357\u5230\u70df\u53f0\u7684\u8ddd\u79bb\u662f3.6\u5398\u7c73\u3002\u5982\u679c\u6c7d\u8f66\u4ee5\u6bcf\u5c0f\u65f630\u5343\u7c73\u7684\u901f\u5ea6\u4e8e\u4e0a\u53489\u65f6\u6574\u4ece\u6d4e\u5357\u51fa\u53d1\uff0c\u8d70\u5b8c\u8fd9\u6bb5\u8def\u7a0b\u5230\u8fbe\u70df\u53f0\u65f6\u662f\u4ec0\u4e48\u65f6\u523b\uff1f
3.6*2000000=72\u5343\u7c73
72/30=2.4\u5c0f\u65f6
9\u65f6+2.4\u65f6=11.4\u65f6=11\u65f624\u5206
\u25cf \u53d1\u6563\u601d\u7ef4
\u2493\u5c0f\u4e39\u5728\u6bd4\u4f8b\u5c3a\u662f1/100\u7684\u623f\u5c4b\u8bbe\u8ba1\u56fe\u4e0a\uff0c\u91cf\u5f97\u81ea\u5bb6\u623f\u5c4b\u5e73\u9762\u56fe\u957f16\u5398\u7c73\uff0c\u5bbd8\u5398\u7c73\u3002\u5c0f\u4e39\u7684\u7238\u7238\u51c6\u5907\u628a\u623f\u5c4b\u7684\u5730\u9762\u94fa\u4e0a\u8fb9\u957f\u4e3a0.8\u7c73\u7684\u5730\u7816\uff0c\u5927\u7ea6\u9700\u8981\u591a\u5c11\u5757\u8fd9\u6837\u7684\u5730\u7816\uff1f\u5982\u679c\u6bcf\u5757\u5730\u7816\u970012\u5143\u94b1\uff0c\u5c0f\u4e39\u5bb6\u4e70\u5730\u7816\u9700\u8981\u591a\u5c11\u94b1\uff1f
16*100=1600\u5398\u7c73=16m
8*100=800\u5398\u7c73=8\u7c73
16*8=128\u5e73\u65b9\u7c73
0.8*0.8=0.64\u5e73\u65b9\u7c73
128/0.64=200\u5757
12*200=2400\u5143
\u5bf9\u4e86\uff0c\u4f60\u4e0a\u51e0\u5e74\u7ea7\u4e86\uff1f
5:600=x：1440
x=5x1440÷600
x=12
答 图上距离是12厘米
图上距离是12厘米
绛旓細瑙ｏ細璁鍥句笂璺濈鏄痻鍘樼背 5:600=x锛1440 x=5x1440梅600 x=12 绛 鍥句笂璺濈鏄12鍘樼背
绛旓細鍥句笂璺濈=5cm=50mm 瀹為檯璺濈=5mm 姣斾緥灏=鍥涓婅窛绂锛氬疄闄呰窛绂=50锛5=10锛1 鎵浠ヨ繖寮鍥剧焊鐨勬瘮渚嬪昂鏄10锛1銆
绛旓細鍦1:100鐨勬瘮渚嬩腑锛鍥剧焊涓閲忓嚭鏉ユ槸5cm鐨灏变唬琛5绫筹紝10cm鐨勫氨浠ｈ〃10绫炽傚湪缁樺埗鍦板浘鍜屽叾浠栧钩闈㈠浘鐨勬椂鍊欙紝闇瑕佹妸瀹為檯璺濈鎸変竴瀹氱殑姣旂缉灏忥紙鎴栨墿澶э級锛屽啀鐢诲湪鍥剧焊涓娿傝繖鏃讹紝灏辫纭畾鍥句笂璺濈鍜岀浉瀵瑰簲鐨勫疄闄呰窛绂荤殑姣斻備竴骞鍥剧殑鍥句笂璺濈鍜屽疄闄呰窛绂荤殑姣旓紝鍙仛杩欏箙鍥剧殑姣斾緥灏恒傛瘮渚嬪昂鍏紡锛1銆佸浘涓婅窛绂=瀹為檯...
绛旓細5鍘樼背锛4鍗冪背锛=5鍘樼背锛400000鍘樼背锛=5锛400000锛=1锛80000锛= 1 80000 锛屾晠绛旀涓猴細姝ｇ‘锛
绛旓細鎹鍗崇煡姣斾緥灏轰负锛5cm浠ｈ〃4km锛屽嵆5cm:4km锛屼笅闈富瑕佸氨鏄崟浣嶆崲绠楀皢涓よ呭崟浣嶇粺涓涓鑷村嵆鍙緱缁撴灉锛4km=4000m=400000cm锛屽洜姝ゅ氨鏄5cm:400000cm锛屼篃灏辨槸1cm:80000cm锛屽崟浣嶄竴鑷村悗灏嗗崟浣嶇暐鍘伙紝寰楁瘮渚嬪昂锛1:80000銆傜瓟妗堝氨鏄1:80000 鍏舵剰灏辨槸鍥句笂1cm琛ㄧず瀹為檯璺濈80000cm锛屽嵆800m銆傦紙鍥句笂1mm琛ㄧず瀹為檯...
绛旓細瑙ｏ細鐢 5 鍘樼背琛ㄧず瀹為檯鐨 4 鍗冪背锛屾瘮渚嬪昂鏄細5 鍘樼背锛4 鍗冪背 = 5 鍘樼背锛4 000 绫 = 5 鍘樼背锛400 000 鍘樼背 = 1 鍘樼背锛400 000 梅 5 鍘樼背 = 1 鍘樼背锛80 000 鍘樼背 = 1锛80 000 銆愪繆鐙肩寧鑻便戝洟闃熶负浣犺В绛
绛旓細5CM涔樹互姣斾緥銆傜劧鍚庢妸鍗曚綅鎹㈢畻涓涓嬨備緥濡傛瘮渚嬫槸1:500锛岄偅5CM瀵瑰簲鐨勫氨鏄5*500=2500CM=25绫
绛旓細500锛2 鍗1锛250
绛旓細5鍘樼背绛変簬50姣背 鍥句笂璺濈锛氬疄闄呰窛绂=姣斾緥灏 50:2.5 =20:1 閲囩撼鍛椾翰
