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探索规律

探索规律. 练习：下面各数中的商是循环小数吗？. （ 1 ） 0.666÷0.2= （ 2 ） 17÷16= （ 3 ） 1.68÷0.37. 练习：下面各数中的商是循环小数吗？. （ 1 ） 0.666÷0.2=3.33 （ 2 ） 17÷16=1.0625 （ 3 ） 1.68÷0.37=4.540540······ =4.540. · ·. 用计算器计算出前几道题，探索有什么规律，应用规律直接写出余下算式的得数。. 0.0909……. 1÷11 ＝ 2÷11 ＝ 3÷11 ＝ 4÷11 ＝

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探索规律

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  1. 探索规律

  2. 练习：下面各数中的商是循环小数吗？ （1）0.666÷0.2= （2）17÷16= （3）1.68÷0.37

  3. 练习：下面各数中的商是循环小数吗？ （1）0.666÷0.2=3.33 （2）17÷16=1.0625 （3）1.68÷0.37=4.540540······ =4.540 · ·

  4. 用计算器计算出前几道题，探索有什么规律，应用规律直接写出余下算式的得数。用计算器计算出前几道题，探索有什么规律，应用规律直接写出余下算式的得数。 0.0909…… 1÷11＝ 2÷11＝ 3÷11＝ 4÷11＝ 5÷11＝ 6÷11＝ 7÷11＝ 8÷11＝ 9÷11＝ 0.5454…… 0.1818…… 0.6363…… 0.2727…… 0.7272…… 0.3636…… 0.8181…… 0.4545…… 0.9090…… 10÷11＝ 11÷11 ＝ ＝ 0.9999…… 1

  5. 考 考 一 9×9 = 81 98×9 = 882 987×9 = 8883 9876×9 =（ ） 98765×9 =（ ） 987654×9 =（ ） 88884 888885 8888886

  6. 21 22.11 222.111 2222.1111 22222.11111 222222.111111

  7. 11111.1111 22222.2222 33333.3333 44444.4444 55555.5555 66666.6666 99999.9999 1234.5679 × 81 =

  8. 444.222 4444.2222 0.4 0.16 0.875 0.4375

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