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數學 試卷二

Authored by TSZ LAM

Mathematics

8th Grade

Used 1+ times

數學 試卷二
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21 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

振鋒y個盒子,而每個盒子有x個紙夾。其後他用去了4個紙夾,

現還 餘下多少個紙夾?

(xy – 4) 個

(xy + 4) 個

x(y – 4) 個

y(x – 4) 個

2.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

解方程 4a + 8 = 6a + 16

a = –4

a = –2

a = 4

a = 2

3.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

已知公式y = 11 – 2x。若y = 3,則x =

7

4

-4

-7

4.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

考慮公式y = ax2 + xc。若a = –2、c = 3及x = 4,求y的值。

-15

-31

33

65

5.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

永光用 $19 購買了 3支紅筆和 1 支藍筆。一支紅筆的售價是 $x。若一支紅筆的售價比一支藍筆的售價多 $1,求一支紅筆的售價。

$3.5

$4

$4.5

$5

6.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

化簡 (6x + 9y) – (x + 2y)。

6 + 11y

6 + 7y

5x + 11y

5x + 7y

7.

MULTIPLE CHOICE QUESTION

3 mins • 3 pts

展開 (4x – 1)(–2x)。

–8x2 + 2x

–8x2 – 2x

–6x –1

2x –1

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