30.修约间隔为0.2,对下列数字进行修约:117.28;105.31;16.24;35.65;46.70;100.25;32.50;27.35;41.30;17.90。
正确答案:
117.28-117.2;105.31-105.4;16.24-16.2;35.65-35.6;46.70-46.8;100.25-100.2;32.50-32.4;27.35-27.4;41.30-41.2;17.90-18.0
答案解析:有
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30.修约间隔为0.2,对下列数字进行修约:117.28;105.31;16.24;35.65;46.70;100.25;32.50;27.35;41.30;17.90。
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