题目内容
【题目】0.09、0.009和0.090这三个数中,单位相同而数值不相同的是( )
A.0.09和0.0009 B.0.09和0.090 C.0.009和0.090
【答案】C
【解析】
试题分析:0.09的单位是0.01,0.009的单位是0.001,0.090的单位是0.001,由此得到答案即可.
解:因为0.09的单位是0.01,
0.009的单位是0.001,
0.090的单位是0.001,
所以0.090与0.009的单位相同.
故应选:C.
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