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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