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2.1-2.09=0.01,0.01×45=0.45,0.045÷0.45=0.1这三道算式列成一道综合算式:算式是(),结果是()

题目详情
2.1-2.09=0.01,0.01×45=0.45,0.045÷0.45=0.1这三道算式列成一道综合算式:算式是( ),结果是( )
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答案和解析
0.045÷[(2.1-2.09)×45]
=0.045÷[0.01×45]
=0.045÷0.45
=0.1