
暑期班第一堂
Authored by BEN LIN
Mathematics
7th Grade
Used 1+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
十七世紀法國數學家默森曾發現 2n-1 這樣的式子中蘊含許多質數。例如:22-1=3,23-1=7 都是質數,請判斷下列數字,哪一個是質數?
24-1
25-1
26-1
28-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
關於絕對值的計算,下列哪一個選項是正確的?
|-8|+|-7|=1
|-8|-|7|=1
|-6|+|-4|=-10
|-6|+|8|=2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
百大國中每天上課八節,校長每隔兩節課必巡堂一次,教務主任每隔一節課必巡堂一次,若今天第一節課時校長與教務主任一同去巡堂,則除了第一節課以外,還有第幾節課校長和教務主任同時都有去巡堂?
5
6
7
8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
請試著將 24255 因式分解,其結果為下列何者?
2×5×7×11
33×5×7×11
32×5×72×11
32×52×72×11
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有一個大富翁向對他有恩的阿龍提供了兩個報恩的方案,甲方案:「我今天給你 100 萬元,明天也給你 100 萬元,以後每天都給你 100 萬元。」;乙方案:「我今天給你 1 萬元,明天給你 2 萬元,後天給你 4 萬元,大後天給你 8 萬元,依此規律給你錢。」;若只給阿龍 30 天的錢,那麼阿龍選擇哪個方案所得到的錢比較多?
甲方案
乙方案
一樣多
無法比較
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一個數為 23×34×53 和 22×32×72 的最大公因數?
22×32×53×72
2×3×5×7
22×32
23×32
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列各式何者正確?
4-3=-(4×4×4)
-32=(-3)×(-3)
(103)2=106
82×86=812
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