当4.595≤a＜4.605时，用四舍五入法得到a的近似数为4.60．
故答案为4.595≤a＜4.605．
用四舍五入法得到a的近似数为4.60，则这个数a的范围是_．
用四舍五入法得到a的近似数为4.60，则这个数a的范围是______．
数学人气：817 ℃时间：2019-10-19 14:43:37
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