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2-1 因數與倍數

2-1 因數與倍數. 24 是否為 528 的因數?. 528÷24=22 ‥. 0. 所以 24 是 528 的因數. 528 是否為 36 的倍數?. 528÷36=14‥ . 24. 所以 36 不是 528 的 因數. 528 不是 36 的 倍數. 26÷2 = 13‥‥0 →26 = 2×13. 2 是 26 的因數. 13 是 26 的因數. 例 1 :判斷下列各數中,哪些是 376 的因數? 1 、 3 、 8 、 23 、 47 、 376. 376= 1×376. 1 和 376 都是 376 的因數.

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2-1 因數與倍數

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  1. 2-1 因數與倍數

  2. 24是否為528的因數? 528÷24=22‥.0 所以24是528的因數

  3. 528是否為36的倍數? 528÷36=14‥.24 所以36不是528的因數 528不是36的倍數

  4. 26÷2=13‥‥0 →26=2×13 2是26的因數 13是26的因數

  5. 例1:判斷下列各數中,哪些是 376的因數?1、3、8、23、47、376 376=1×376 1和376都是376的因數 376÷3=125 ‥.1 3不是376的因數 376=8×47 8和47都是376的因數 376÷23=16 ‥.8 23不是376的因數

  6. 例:判斷下列各數中,哪些是 144的因數?1、3、6、8、14、24、 44、144 答:1、3、6、8、24、144

  7. 例:寫出36的因數 36=1×36 36的因數: 1、2、3、4、6、9、12、18、36 =2×18 =3×12 =4×9 =6×6

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