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倍數、因數、質數、合成數、公因數、最大公因數、公倍數和最小公倍數

Authored by P4E(21) Ethan

Mathematics

1st - 5th Grade

Used 1+ times

倍數、因數、質數、合成數、公因數、最大公因數、公倍數和最小公倍數
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 9 pts

1~20的整數中,最大的質數是什麼?

  11

13

7

19

23

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

18和48的最小公倍數是什麼?

  144

  140

 141

  142

  143

3.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

下面哪一組數都是合成數?

23、49

29、31

35、37

33、 91

39、49

4.

MULTIPLE CHOICE QUESTION

1 min • 20 pts

81有什麼因數?

 1

  3

  27

   以上都是

5.

FILL IN THE BLANKS QUESTION

2 mins • 12 pts

求23的最初6個倍數

(a)  

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