Answers to Maths Paper 2 `09

1a) 13.70

1b) 4.740740 > express as recurring decimal (which means place the dot on top of 7 and 0.

2a) 2 to the power o f 3 x 3 x 5 to the power of 2

2b) 45

3) 0924

4a) -372

4b) r to the power of 3 + 3s over t

5a) 7ab - 8a

5b) -128 + 100x or 100x - 128

5c) 17 + 6m over 20

6a) 3(3h - 1)(g + 5)

6b)i) 1 over 2

6b)ii) x = 24

7a) Angle AOD = 65.5 degree

7b) x = 230 degree

Q8 > Don't need to do :D

9a) Ah Seng = 12 years old
Ah Yong = 18 years old

9b)i)(2x + 24) years old

9b)i) (4x - 12) years old

9b)iii) 15 years old

Answers to Maths Paper 2 `08

1a) o.6363636363 > present it as a recurring decimal. (which means put the dot on top of 6 and 3)

1b) 1002.4

2a) i) 2 > the index notation is 12. (:

2a) ii) 64

2b) 16cm

3a) -6x (index notation 3) + 8 (index notation 2) + 4x - 10

3b) 81 r 2, express as a mixed fraction > 40 remainder 1 remainder 2

4a) -38a + 23

4b) -2ab

4c) 23x - 6 over 20

5a) 1 over 4 y (2 - a)

5b) i) x = 12

5b) ii) x = 73 r 7, express as a mixed fraction

6a) 120 degree

6b) 56 degree

7) 42 degree

8a) i) 38 + x

8a) ii) x over 2 = 1 over 3 (x t 38)

8a) iii) 76 and 114

8b) p = 108 degree
q = 114 degree