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「因數」.「應速」之挑戰題

Authored by 萱 吳

Mathematics

1st - 5th Grade

Used 2+ times

「因數」.「應速」之挑戰題
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

哪個「不是」100的因數呢?

2

5

15

20

Answer explanation

100的因數有1、2、4、5、10、20、25、50、100,但絕對沒有「15」呦!

2.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

49的因數有哪些?

(a)  

Answer explanation

49的因數只有3個哦!分別是1、7、49。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

79是自己的因數,也是自己的倍數。

Answer explanation

很抱歉,79真的很孤獨,另外,它的因數只有1跟79哦!

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

21的因數有幾個呢?

3

4

5

6

Answer explanation

21的因數有1、3、7、21共4個呦!

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

我是進階題。14跟21的「共同因數」有哪些?

1

3

7

9

Answer explanation

14跟21的「共同因數」只有1跟7哦!

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