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www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com小结:求近似数时,保留整数,表示精确到个位;保留一位小数,表示精确到十分位;保留两位小数,表示精确到百分位……保留哪位,就要把这位后面的数都省略。我们是怎么求出小数近似数的呢?探索新知二 www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com(1)0.25612.0061.0987(保留两位小数)0.256≈0.2612.006≈12.011.0987≈1.10(2)3.720.589.0548(保留一位小数)3.72≈3.70.58≈0.69.0548≈9.11.求下面小数的近似数。巩固练习三教材做一做翼 www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com1010.09.9610.90.915151.551.4622.02.00巩固练习三教材P54T12. www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com5612134578巩固练习三教材P54T2翼3. www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com巩固练习三教材P55T5翼4. 查看更多

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