
數學 試卷二
Authored by TSZ LAM
Mathematics
8th Grade
Used 2+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
(9x + 2)(9x - 2) =
18x – 4
81x2 – 4
81x2 + 36x – 4
81x2 – 36x – 4
2.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
x2 – 10x + 25 =
(x + 5)2
(5 – x)2
(x + 5)(x – 5)
(x – 25)2
3.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
4x2 + 12xy + 9y2 =
(2x + 3y)(2x – 3y)
(4x + 9y)2
(2x + 3y)2
(3x + 2y)2
4.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
已知 a = 4bc / 3。若 b = 6 及 c = 9,則 a =
18
24
72
216
5.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
已知 p = 4(a – b)。若 p = –8 及 a = 9,則 b =
-11
-7
7
11
6.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
若一個量度的真確值是250 mm和絕對誤差是5 mm,則相對誤差是
0.01
0.02
0.05
0.1
7.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
一組數據的第一個組區間和第二個組區間分別是「1 – 50」和「51 – 100」。第二組的組界是
50.5 – 100.5
50.5 – 99.5
51.5 – 100.5
51.5 – 99.5
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