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pmaths.moderneducation.hk/edu_platform/login/teacher/primary/mathsIII/index.jsp

整除性 ( 一 ). http://pmaths.moderneducation.com.hk/edu_platform/login/teacher/primary/mathsIII/index.jsp. 哪個數是偶數？ 它們又能否被 2 整除呢？. 888. 157. . . 5,743. . 24,680. 1,809,892. . . 這些數能否被 5 整除呢？. 885. 157. . . 5,743. . 24,680. 1,809,890. . . 253+2. 253+2. 2. 7. 96. 96.

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pmaths.moderneducation.hk/edu_platform/login/teacher/primary/mathsIII/index.jsp

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  1. 整除性(一) http://pmaths.moderneducation.com.hk/edu_platform/login/teacher/primary/mathsIII/index.jsp

  2. 哪個數是偶數？它們又能否被2整除呢？ 888 157   5,743  24,680 1,809,892  

  3. 這些數能否被5整除呢？ 885 157   5,743  24,680 1,809,890  

  4. 253+2 253+2 2 7 96 96 96 96 96 6 4 2 0 8 依指示填寫個位的數字 • 96　是一個能被2整除的三位數。 • 253+2　的結果是一個能被5整除的數。 =275 =280

  5. 把353加上一個數，使結果分別是可以被2、5或10整除的數把353加上一個數，使結果分別是可以被2、5或10整除的數 • 結果是可以被2整除的數：353+ = • 結果是可以被5整除的數：353+ = • 結果是可以被10整除的數：353+ =

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