0.307保留两位有效数字是多少
0.307保留两位有效数字是多少
数学人气:410 ℃时间:2020-06-08 16:11:36
优质解答
因为在数字后遇到0,所以要有四舍五入的进位,舍去7,把0变为非零数,再进一位1,又因为是有效两位,所以是0.31
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