修约以下数字到个位:18564.495、236.5004、338.5、66541.5、-15.64。
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7.501修约到个位数得7。()A正确B错误
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按有效数字修约的规则,以下测量值中可修约为2.01的是A2.005B2.006C2.015D2.016E2.0046
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3、将以下数修约为4位有效数字: 0.0253541修约为(), 0.0253
将以下数修约为4位有效数字:0.0253541修约为(),0.0253561修约为(),0.0253550修约为(),0.0253650修约为(),0.0253651修约为(),0.0253549修约为()。
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4、试将以下数字修约到十分位:36.34、39.36、28.25、32.35、2
试将以下数字修约到十分位:36.34、39.36、28.25、32.35、28.450001、32.34999。
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将50.28修约到个位数的0.5个单位得()A50B50.3C50.0D50.5
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6、把下列数值修约到个位数的0.5个单位:①20.35②106.82③60.25
把下列数值修约到个位数的0.5个单位:①20.35②106.82③60.25④60.38⑤-60.75