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简答题把下列数值修约到个位数的0.5个单位:①20.35②106.82③60.25④60.38⑤-60.75
  • ①20.35×2=40.7≈4141÷2=20.5
    ②106.82×2=213.64≈214.0214.0÷2=107.0
    ③60.25×2=120.5≈120.0120.0÷2=60.0
    ④60.38×2=120.76≈121121÷2=60.5
    ⑤-60.75×2=-121.50≈-122-122÷2=-61.0
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