Revision for math final exams for Grade8

Mathematics Department Grade (8) 1st Semester Final Work Sheet Date: 30/12/2010 Ques.1: Fill in the following table: The number Correct to 2 d.p. 0.009999 33.065 195.195 0.123 0.00001818 Ques.2: Write the following in standard form: a) Name:

Correct to 3 s.f.

In standard form

b)

c)

1

Ques.3: Estimate roughly each of the following: a)

b)

c)

Ques.4: Find the nth term in each of the following: a) 2, 4, 8, 16, 32,………………………………………..

b) -5, -1, 3, 7, 11,………………………………………..

2

c) 7, 5, 3, 1,…………………………………………………

d)

………………………………………………

e) 1, 2, 3, 4, 5,……………………………………………..

Ques.5: Given the sequence 5, 11, 17, 23, 26,………………………………. a) Write down the next two terms.

b) Find the 16th term.

c) Find the term equal to 179.

3

Ques.6: Write the following as a fraction: a) 0.15 =

b)

c)

Ques.7: Find the value of . a)

b)

4

Ques.8: Solve the following equations: a)

b)

c)

5

Ques.9: Solve the following inequalities: a)

b)

and

c)

6

Ques.10: Solve the following simultaneous equations

Ques.11: Solve each problem by forming two pairs of simultaneous equations: a) Find two numbers where three times the smaller number exceeds the larger by 5 and the sum of the numbers is 11.

7

b) Twice the difference between two numbers is 8. The sum of the greater number and twice the smaller number is 13. Find the numbers.

Ques.12: In the following matrices, the matrices have the following values:

A=

;

B=

;

C=

D=

;

E=

;

F=

;

G=

;

H=

;

J=

;

K=

8

Calculate the resultant value for each question where possible. a) A + B =

b) G – J =

c) DJ=

d) 2E – 3K=

9

e) HK =

f)

=

g) FO =

10

Ques.2: Find the value of letters: a)

b)

c)

11

d)

Ques.13: The following notations stand for matrices. Fill in the blank with the right notation:

a)

………..= I

b)...