
七上第二次段考-因倍數+最大公因數最小公倍數
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
蔡佩旻 蔡佩旻
Used 11+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
20 的質因數有哪些?
1、2、5
1、5
2、5
1、2、4、5、10、20
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
求小於 39 的正整數 n 中,使39/n為最簡分數的 n 共有幾個?
23
24
25
37
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
欲將 n 個邊長為 1 的小正方形,拼成一個長、寬皆大於 1 的矩形,且不會剩下任何小正方形,則 n 不可能為下列哪一個數?〔90.基測Ⅰ〕
81
85
87
89
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有一個七位數 432□905 含有質因數 11,則□=?
3
6
9
0
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A=1×2×3×……×50,則 A 的質因數共有多少個?
14
15
16
17
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
五位數 5265□,其標準分解式為 2a×3b×5c×13,則下列何者正確?
a=2
b=3
c=1
□=0
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小娟想用 60 塊邊長為 1 的正方形紙板,緊密地拼成面積為 60 的長方形,則此長方形的周長最小可為多少?〔95.基測Ⅱ〕
30
32
45
60
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