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一、填空(16分)1、二亿零九百万六千写作( );把它改写成“万”作单位的数是( )万;再将它四舍五入到亿位记作( )亿。2、3.04公里=( )公里( )米
One, fill in the blanks (16 points) 1, 209 million six thousand writing (); to rewrite it as “million” for the number of units is () million; 2,3.04 km = () km () meters