
Grade 7_Review
Authored by Anh Trần
Mathematics
7th Grade
Used 1+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個是 -5 的絕對值?
Answer explanation
絕對值是到 0 的距離,因此 |-5| = 5。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
把 520,000,000 這個數寫成科學記數法是:
Answer explanation
520 百萬 = 5.2 × 10^8。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在數軸上,哪一個點最接近 -1/2?
Answer explanation
-1/2 相等於 -5/10。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪一個算式是正確的:-3y - 3y = ?
Answer explanation
-3y - 3y = -6y。
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如果一個角的餘角比它的補角多 15°,那這個角是多少?
Answer explanation
因為餘角 = 90 - α,補角 = 180 - α。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如下圖郵票設計所示,三種郵票邊長關係正確的是:
Answer explanation
根據設計圖,這是數量關係。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
解方程式:3x + 4 = 4x - 5,x =?
Answer explanation
解方程式得 x = -9。
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