7.一种精密的零件长5毫米,画在图纸上是4厘米,这幅图纸的比例尺是多少? 8.王老师骑车以每小时 图纸上比例尺怎么算,比如1:150,尺子量出是10厘米,那是...
\u4e00\u79cd\u7cbe\u5bc6\u96f6\u4ef6\u957f5\u6beb\u7c73\uff0c\u753b\u5728\u56fe\u7eb8\u4e0a\u662f4\u5398\u7c73\uff0c\u8fd9\u5e45\u56fe\u7684\u6bd4\u4f8b\u5c3a\u662f\u591a\u5c115\u6beb\u7c73\uff1a4\u5398\u7c73\u7684\u6bd4\u4f8b\u5c3a\u662f1:8
\u6bd4\u4f8b\u5c3a1:150\uff0c\u5c3a\u5b50\u91cf\u51fa\u662f10\u5398\u7c73\uff0c\u90a3\u662f15\u7c73\u3002
\u201c1:150\u201d\u662f\u6570\u5b57\u662f\u6bd4\u4f8b\u5c3a\uff0c\u8868\u793a\u7684\u610f\u601d\u662f\u56fe\u4e0a\u4e00\u6761\u7ebf\u6bb5\u7684\u957f\u5ea6\u4e0e\u5730\u9762\u76f8\u5e94\u7ebf\u6bb5\u7684\u5b9e\u9645\u957f\u5ea6\u4e4b\u6bd4\u3002
\u8fd9\u91cc\u53ef\u4ee5\u5217\u51fa\u7b49\u5f0f\uff1a1:150=10cm:x\uff1b
\u89e3\u5f97x=1500\u5398\u7c73=15\u7c73\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u6bd4\u4f8b\u5c3a\u901a\u5e38\u6709\u4e09\u79cd\u8868\u793a\u65b9\u6cd5\u3002
1\u3001\u6570\u5b57\u5f0f\uff08\u53c8\u540d\u6570\u5b57\u6bd4\u4f8b\u5c3a\uff09\uff0c\u7528\u6570\u5b57\u7684\u6bd4\u4f8b\u5f0f\u6216\u5206\u6570\u5f0f\u8868\u793a\u6bd4\u4f8b\u5c3a\u7684\u5927\u5c0f\u3002\u4f8b\u5982\uff1a1\u223650,000,000\uff0c\u62161/50,000,000\u3002
2\u3001\u7ebf\u6bb5\u5f0f\uff08\u53c8\u540d\u6bd4\u4f8b\u5c3a\uff09\uff0c\u5728\u5730\u56fe\u4e0a\u753b\u4e00\u6761\u7ebf\u6bb5\uff0c\u5e76\u6ce8\u660e\u5730\u56fe\u4e0a1\u5398\u7c73\u6240\u4ee3\u8868\u7684\u5b9e\u9645\u8ddd\u79bb\u3002
3\u3001\u6587\u5b57\u5f0f\uff0c\u5728\u5730\u56fe\u4e0a\u7528\u6587\u5b57\u76f4\u63a5\u5199\u51fa\u5730\u56fe\u4e0a1\u5398\u7c73\u4ee3\u8868\u5b9e\u5730\u8ddd\u79bb\u591a\u5c11\u7c73\uff0c\u5982\uff1a\u56fe\u4e0a1\u5398\u7c73\u76f8\u5f53\u4e8e\u5730\u9762\u8ddd\u79bb500\u7c73\uff0c\u6216\u4e94\u4e07\u5206\u4e4b\u4e00\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u6bd4\u4f8b\u5c3a
8题 6厘米:(24X4X1000X100)厘米=1:1600000 8题的比例尺是1:1600000
9题 15:30000000=1:2000000 9题的比例尺是1:2000000
7、 4 ÷ 0.5 = 8
答:这幅图纸的比例尺是8:1。
8、
(24000 × 4)÷ 0.06 = 1600000
答:这幅地图的比例尺是1:1600000.
9、
(120000 + 180000)÷ 0.15 = 2000000
答:这幅地图的比例尺是1:2000000
绛旓細姣斾緥灏 =100鍘樼背锛5姣背 =100锛0.5 =200锛1 鏁呯瓟妗堜负锛200锛1锛
绛旓細8鍘樼背=80姣背锛姣斾緥灏=80锛5=16锛1锛庣瓟锛氳繖寮犲浘绾哥殑姣斾緥灏轰负16锛1锛庢晠閫夛細C锛
绛旓細5脳12/1锛60锛姣背锛夛紳6锛堝帢绫筹級
绛旓細闀垮害搴旂敾( 5 )鍘樼背銆傜畻寮忥細5姣背脳10锛50姣背锛5鍘樼背
绛旓細20cm=200mm,200/5=40/1.鍥剧殑姣斾緥鏄40:1
绛旓細6鍘樼背锛5姣背锛=60姣背锛5姣背锛=60锛5锛=锛60梅5锛夛細锛5梅5锛夛紝=12锛1锛岀瓟锛氳繖寮犲浘绾哥殑姣斾緥灏烘槸12锛1锛庢晠閫夛細D锛
绛旓細6鍘樼背=60姣背 姣斾緥灏:60:5=12:1 鎵浠ラ夌涓変釜
绛旓細3鍘樼背锛5姣背 =30姣背锛5姣背 =6锛1 绛旓細杩欏箙鍥剧焊鐨勬瘮渚嬪昂鏄6锛1.
绛旓細8鍘樼背=80姣背锛姣斾緥灏=80锛5=16锛1锛庣瓟锛氳繖寮犲浘绾哥殑姣斾緥灏轰负16锛1锛庢晠閫夛細C锛
绛旓細5脳12=60锛姣背锛=6锛堝帢绫筹級锛庢晠绛旀涓猴細6锛