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歡迎您訪問數(shù)學(xué)考題練習(xí):2005年新版人民幣中一角硬幣的直徑約為0.0!

數(shù)學(xué)考題練習(xí):2005年新版人民幣中一角硬幣的直徑約為0.0

更新時(shí)間:2024-01-12 14:02:34作者:貝語網(wǎng)校

2005年新版人民幣中一角硬幣的直徑約為0.022m,用科學(xué)記數(shù)法表示為________m

試題答案

2.2×10-2

小于1的正數(shù)也可以利用科學(xué)記數(shù)法表示,一般形式為a×10-n,與較大數(shù)的科學(xué)記數(shù)法不同的是其所使用的是負(fù)指數(shù)冪,指數(shù)由原數(shù)左邊起第一個(gè)不為零的數(shù)字前面的0的個(gè)數(shù)所決定.:0.022=2.2×10-2m.
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