
「因數」.「應速」之挑戰題
Authored by 萱 吳
Mathematics
1st - 5th Grade
Used 2+ times

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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。
是
否
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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