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歡迎您訪問每日一練:以“和諧之旅”為主題北京奧運會火炬接力,傳遞總里程!

每日一練:以“和諧之旅”為主題北京奧運會火炬接力,傳遞總里程

更新時間:2024-01-12 12:53:07作者:貝語網校

以“和諧之旅”為主題北京奧運會火炬接力,傳遞總里程約為137 000千米,這個數據用科學記數法可表示為

A.1.37×103千米

B.1.37×104千米

C.1.37×105千米

D.1.37×106千米

試題答案

C

試題解析

此題考查科學記數法的表示方法.科學記數法的表示形式為a×10n的形式,其中1≤|a|<10,n為整數,表示時關鍵要正確確定a的值以及n的值.

解答:根據題意137 000千米=1.37×105千米.

故選C.

點評:在實際生活中,許多比較大的數,我們習慣上都用科學記數法表示,使書寫、計算簡便.

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