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歡迎您訪問數學考題練習:2010年春節黃金周節前,節后,成都交通部門7!

數學考題練習:2010年春節黃金周節前,節后,成都交通部門7

更新時間:2024-01-12 16:35:38作者:貝語網校

2010年春節黃金周節前,節后,成都交通部門7天累計發送旅客約412.02萬人次,數“412.02萬”用科學記數法可記為

A.412.02×104

B.4.1202×106

C.4.1202×102

D.4.1202×104

試題答案

B

試題解析

可先把412.02萬還原成原數,進而表示成a×10n的形式.

解答:412.02萬=4 120 200=4.1202×106.故選B.

點評: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為整數數位減1.

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