Maths

Practice paper 1
Recommended time: One hour

Section 1
10 multiple-choice questions: 1 mark each
Select the correct answer, A, B, C or D.
Exercise

2-01

Question 1
Simplify 4ab + b2 – 3ab – 4b2.
(A) –2ab3
(B)

ab – 3b2

(C) 7ab – 3b2
(D)

ab – 5b2

Exercise

1-01

Question 2
Meg borrowed $7500 for 3 years at 9.5% p.a. flat interest to buy a jet ski. What amount
does she repay altogether?
(A) $2137.50
(B) $2250
(C) $9637.50
(D) $9750
Exercise

2-03

Question 3

1
Simplify 4t 5 × t 3.
2
(A) 2t 15
(B)

8t 8

(C)

2t 8

(D) 8t 15

138

NCM 12. Mathematics General 2

CLA-NCM12PW2-13-0104-003.indd 138

ISBN 9780170238977

7/11/13 3:57 PM

Question 4
This table shows the future value of an annuity with a contribution of $1 at the end of
each period.

Exercise

1-06

Interest rate per period
Period

3%

5%

8%

12%

 5

 5.3091

 5.5256

 5.8666

 6.3528

 8

 8.8923

 9.5491

10.6366

12.2997

10

11.4639

12.5779

14.4866

17.5487

12

14.1920

15.9171

18.9771

24.1331

Use the table to calculate the future value of an annuity with a contribution of $8000 per
year at 5% p.a. for 8 years.
(A)

$95 491

(B)

$76 392.80

(C)

$112 000

(D)

$46 392.80

Question 5

Exercise

A bridge length was measured to be 35.6 m. What is the percentage error of this
measurement, correct to the same number of significant figures as in the measurement?
(A)

±0.3%

(B)

±0.140%

(C)

±0.14%

(D)

3-01

±0.28%

Exercise

Question 6

2-04

Solve 5 - 2x = -6.
(A)
(B)
(C)
(D)

1
2
1
x=5
2
1
x = – 
2
1
x=
2
x = –5

ISBN 9780170238977

CLA-NCM12PW2-13-0104-003.indd 139

Practice paper 1

139

7/11/13 3:57 PM

Exercise

2-08

Question 7
R is directly proportional to x. When x = 12, R = 30. What is the value of R when x = 5?
(A) 20

Exercise

2-07

(B) 12

(C)...