测量操场边一棵大树的高度，立了一根2米长的竹竿，影长是08米，树的影长是2米，这棵树有多高？ 实验小学操场上有一棵大树，旁边有一根2.5米高的竹竿，上午9...
\u5728\u64cd\u573a\u6d4b\u91cf\u4e86\u4e00\u6839\u7af9\u7aff\u548c\u64cd\u573a\u8fb9\u4e0a\u4e00\u68f5\u5927\u6811\u7684\u5f71\u957f\u7af9\u7aff\u957f1.5\u7c73\uff0c\u5f71\u957f2.5\u7c73\uff0c\u5927\u6811\u7684\u5f71\u957f8.5\u5927\u53d4\u9ad8\u591a\u5c11\u7c73\uff1f\u5df2\u77e5\uff0c\u7af9\u7aff\u957f 1.5 \u7c73\uff0c\u5f71\u957f 2.5 \u7c73\uff0c
\u53ef\u5f97\uff1a\u7269\u4f53\u7684\u9ad8\u5ea6\u662f\u6b64\u65f6\u5f71\u957f\u7684 1.5\u00f72.5 = 3/5 \uff1b
\u5df2\u77e5\uff0c\u5927\u6811\u7684\u5f71\u957f 8.5 \u7c73\uff0c
\u53ef\u5f97\uff1a\u5927\u6811\u9ad8 8.5\u00d73/5 = 5.1 \u7c73\u3002
\u8bbe\u5927\u6811\u7684\u5b9e\u9645\u9ad8\u662fx\u7c73\uff0c\u5f97\uff1a2.5\uff1a2=x\uff1a6 2x=2.5\u00d76 2x=15 x=7.5\u7b54\uff1a\u5927\u6811\u7684\u5b9e\u9645\u9ad8\u662f7.5\u7c73\uff0e
2×(2÷0.8)=5这棵树有5米高。
绛旓細2脳(2梅0.8)=5 杩妫垫爲鏈5绫抽珮銆
绛旓細6/1.5=4m
绛旓細5.2梅1.2脳3=13/3闀/3=13绫 绛旓細澶ф爲鐨勯珮搴鏄13绫炽
绛旓細濡傛灉 浣 鏄皬瀛︾敓 鍙互鍘熻皡 濡傛灉浣犳槸涓鐢 灏变笉鍙互鍘熻皡 璇存槑浣犳病璁ょ湡璇讳功 濡傛灉浣犳槸澶у鐢 閭ｄ箞浣犲彲浠ラ瀛︿簡
绛旓細璁捐繖妫靛ぇ鏍戠殑楂樺害涓簒绫筹紝鍒3锛1.2=x锛5.2锛1.2x=5.2脳3锛 1.2x=15.6锛 x=13锛涚瓟锛氳繖妫靛ぇ鏍戠殑楂樺害鏄13绫筹紟
绛旓細璁澶ф爲鐨勯珮搴涓簒绫筹紝2锛2.5=6.4锛歺锛2x=2.5脳6.4锛 x= 2.5脳6.4 2 锛 x=8锛涚瓟锛氬ぇ鏍戠殑楂樺害涓8绫筹紟
绛旓細璁鏍戠殑楂樺害涓簒绫筹紝寰楋細 x锛8=1.5锛2.4 2.4x=8脳1.5 2.4x=12 x=5绛旓細鏍戠殑楂樺害鏄5绫筹紟
绛旓細璁澶ф爲楂榵绫筹紝鍒1.40锛1.12=x锛8 1.12x=1.40脳8 1.12x=11.2锛 x=10锛涚瓟锛氬ぇ鏍戞湁10绫抽珮锛
绛旓細2/0.5=澶ф爲楂/0.9 澶ф爲楂=3.6绫
绛旓細宸茬煡锛岀绔块暱 1.5 绫筹紝褰遍暱 2.5 绫筹紝鍙緱锛氱墿浣鐨勯珮搴鏄鏃跺奖闀跨殑 1.5梅2.5 = 3/5 锛涘凡鐭锛屽ぇ鏍戠殑褰遍暱 8.5 绫筹紝鍙緱锛氬ぇ鏍戦珮 8.5脳3/5 = 5.1 绫炽
