a=501 × 499,
b=4982 + 4 × 498+4,
c=5002 -1000+1,
則a、b、c的大小關係為何?
國三第一次模擬考 ch10 - ch11
Quiz
•
Mathematics
•
12th Grade
•
Hard
王 元松
Used 7+ times
FREE Resource
10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
a=501 × 499,
b=4982 + 4 × 498+4,
c=5002 -1000+1,
則a、b、c的大小關係為何?
a>b>c
a>c>b
b>c>a
b>a>c
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
已知連續正奇數1+3+5+⋯+37=192,
1+3+5+⋯+101=512,
則 39+41+43+⋯+101 之值為何?
1960
2040
2160
2240
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
3x−4y 是 的正平方根,
4x−7y 是 1的負平方根,
則 2x+3y 的值?
4.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
已知 ≓ 18.9⋯,若a、b皆正整數,
且 、 也皆為正整數,
則 a+b 的最小值為?
5.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
如圖,元松兒拿著25m長的梯子,在離牆7m處斜靠於牆邊,結果梯子下滑了4m,則梯子下滑後踢腳向外移動了______公尺?
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
a= + ,
b= + ,
c= + ,
則 a、b、c 三數的大小關係為何?
a > b > c
b > c > a
a > c > b
c > b > a
7.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
(– 2021) × 2022 × ( ) =?
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