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歡迎您訪問數學考題練習:把-2360000用科學記數法表示,應是!

數學考題練習:把-2360000用科學記數法表示,應是

更新時間:2024-01-12 12:54:34作者:貝語網校

把-2360000用科學記數法表示,應是

A.-2.36×104

B.-2.36×106

C.-2.36×107

D.-2.36×10-7

試題答案

B

試題解析

科學記數法就是將一個數字表示成(a×10的n次冪的形式),其中1≤|a|<10,n表示整數,n為整數位數減1,即從左邊第一位開始,在首位非零的后面加上小數點,再乘以10的n次冪.

解答:-2 360 000=-2.36×106

故選B.

點評:本題考查學生對科學記數法的掌握.科學記數法要求前面的部分的絕對值是>或等于1,而<10,n為由原數左邊起第一個不為零的數字前面的0的個數所決定.

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