1. 2009 RVHS Prelim Maths (4016) Paper 1 Answer Key
1(a) 3.17 x 10-1, (b) 4.21 x 109
2(a) x = 60, (b) 40 children
8x3 1
3(a) , (b) k = 4
27 2
4(a) 0938, (b) 1509
2
5(a) $160, (b) 14 %
7
6. 44 cm
2
7(a) , (b) 4.0 x 106
3
1
8(a) c = 1, (b) m =
2
9 40
9(b)(i) , (ii) 
40 41
 6.6 
10(a)   , (b) It means that the cost of package A is $6.60 while that of B is $14.10
 14.1
11(b) 4
3r
12. T 
4r
800 1
13(a) y  , (b) 33 %
x 3
14(a)7, (b) 2, (c) 40%
15(a) ( p  2q)(3x  4 y ) , (b) 24x
16(a) 18 sides, (b) 9 sides
17(a) 12:45 pm, (b) 480 = 25 x 3 x 5, 576 = 26 x 32, n = 6
18(a) k =4, (b) x = 3, y = 1
19(a) 2:3, (b) 202.5 cm2, (c) $45
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 2 

20(a)(i)2n, (ii) 4n, (iii) 4(m  n), (b) 2(2m + n), UV = SU .
5
3
21(a)(ii) x = 1 , (b)(ii) (3, 1)
4
3
22(a) v  x , (b) 30 s, (c) 675 m
2
23(b) 082, (c) 12400 m2