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歡迎您訪問數學考題練習:兩地實際距離時45000米,在地圖上的距離是5!

數學考題練習:兩地實際距離時45000米,在地圖上的距離是5

更新時間:2024-01-12 16:27:58作者:貝語網校

兩地實際距離時45000米,在地圖上的距離是5cm,則這張地圖的比例尺是________.

試題答案

1:900000

試題解析

比例尺:地圖上的線段長度與實地相應線段長度之比.它表示地圖圖形的縮小程度,又稱縮尺.

解答:∵45000米=4500000厘米,

∴根據比例尺的定義,知這張地圖的比例尺是:5:4500000=1:900000;

故答案是:1:900000.

點評:本題考查了比例線段的應用.解答此題的關鍵是正確理解比例尺的定義:比例尺-地圖上的線段長度與實地相應線段長度之比.它表示地圖圖形的縮小程度,又稱縮尺.如1:10萬,即圖上1厘米長度相當于實地100000厘米(即1000米).所以你這個比例尺就是5cm:50km=1:1000000.

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