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Maths 1011 Midyear F4 Exam PaperII

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Maths 1011 Midyear F4 Exam PaperII
P.1

Heep Yunn School
Mid-year Examination (2010 – 2011)
SS1 Mathematics (Compulsory Part)
Paper 2
F.4 A, B, C, D, E
Time allowed: 45 minutes
Total marks: 30
Answer ALL the questions in this paper.
The diagrams in this paper are not necessarily drawn to scale.

Dec 2010

2

1.

 mn 1 
 1  =
m n

A. 1

2.

4.

4a 2b

A.
C.

4(a  2b)(a + 2b)
4(a  4b)(a + 4b)

If

b
 c , then y = a  by b  ac
b

D.

 1 a
 
2

D.

ac  b c b

a b

C.

22a 3b

B.
D.

4(a  b)2
4(a  2b)2

B.

ac  b bc C.

b c(a  1)

B.

71.25 cm2

C.

78.75 cm2

D.

89.5 cm2

B.

34.8% of X.

C.

45% of X.

D.

55.6% of X.

1 of the students in a class passed in a test. After taking a re-examination, 25%
3
of the failed students passed. Find the total pass percentage of the class.
B.

45%

C.

50%

D.

The number of planes of symmetry of a regular tetrahedron is
A. 2
C. 4

9.

m n Originally,

A. 40%
8.

D.

If X is 80% greater than Y, then Y is
A. 20% of X.

7.

m2 n2 If the length and width of a rectangle are measured as 8 cm and 10cm respectively and all measurements are corrected to the nearest cm, then the least possible area of the rectangle is
A. 63 cm2

6.

B.

1
 
2

C.

Factorize 4a 2  16b2 .

A.
5.

m4 n4 4a
=
8b

A.
3.

B.

B.
D.

3
6

Which of the following can be obtained by a reflection of

A.

B.

C.

?

D.

60%

P.2

10. A cone is formed from the sector. The length of arc is 10 and the radius is 13. The height of the cone is
A. 12
C. 10

B.
D.

11
9

11. The heights of two similar cones are in the ratio 2:3, the ratio of their volumes is
A. 2 : 3

B.

4:9

B.
D.

36
45

C.

6:9

C.

0.3

D.

8 : 27

D.

2

12. In the figure, x =
A. 30
C. 40

13. Which of the following is a rational number?

18

A.

2 18  3

B.



14. If a and b are real numbers such that ab 0, which of the following must be true? a I.
0
b
II. a  b < 0
III. a 2  b2  0
A. I only
15.

B.

III only

C.

I and III only

D.

I, II and III

B.

24

C.

24

D.

24i

B.

i1

C.

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