
倍數和因數
Authored by Phoebe Mok
Mathematics
4th Grade
Used 16+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
12 的首3個倍數是?
36
12
24, 36, 48
12, 24, 36
Answer explanation
留意題目:
「首三個」
「第三個」
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
12的第3個倍數是?
12
3
15
36
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在 34 以內, 11 的倍數有多少個?
4
34
11
3
Answer explanation
11x1 = 11
11x2 = 22
11x3 = 33
11x4 = 44 ( > 34)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
75 是 5 的第幾個倍數?
14
15
75
5
Answer explanation
5 x 15 = 75
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一個是63的所有因數?
0, 1, 3, 7, 9, 21, 63
1, 3, 6, 9, 21
1, 3, 7, 9, 21, 63
1, 3, 6, 9, 21, 63
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪個數所擁有的因數數目最小?
(提示: 質數只有2 個因數)
4
49
75
83
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
以下哪些數只有3個因數?
9
4
73
121
Answer explanation
9: 1x9, 3x3 (1, 3, 9)
4: 1x4, 2x2 (1, 2, 4)
121: 1x121, 11x11 (1, 11, 121)
73 是質數
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