OKI International School

3rd Term - Revision Assignment

July 2021
Mathematics
Grade 8 Sci. / Com.
Name: ………………………………………..
2 1 3rd Term July 2010
1. Find the value of ( )
5

1
2. Write down the reciprocal of
3

3. Give the gradient and the y-intercept of the line with equation 12𝑥 + 3𝑦 = 18

4. Find the value of angle a:

a 70°

5. Find the L.C.M. of 24,6 and 12

1 −2
6. Evaluate : ( )
3

7. Find the HCF of 8,6 and 3

8. Find the value of angle n:

70°
80° n
9. A number p is equal to twice the sum of two numbers x and y

10. Find the value 32

21
11. Express as a decimal.
100

1
12. Express 0.06 as a fraction.

13. Simplify 8z × 4y

1 4
14. Evaluate 2
3
+ 7

15. Evaluate 81 ÷ 0.09

16. It is given that x = −2 Find the value of 2𝑥 2 − 5𝑥

17. Solve x + 3 ( x + 1 ) = 2x

18. Increase Rs. 6000 by 20%

19. Express 12 mm as a percentage of 2 m

20. Chanuk bought a Table for £ 450 and sold it for £ 520. Find his percentage mark-up.

2
 Part – A
y
1) Write down the equations
of given lines:

line 1 : ……………………………

Line 2
line 2 : ……………………………
x
2) Draw on the same diagram
the straight line graphs of Line 1
x = -2 and y = 3.

3) Calculate the gradients of given lines:

y

line 1 :

Line 1
line 2 : Line 2

4) Complete the table: Y = 2x - 2

x -1 0 1 2
y

5) Find the new line equation which is parallel to the above line graph and goes through the point ( 0, 1).

6) Find the length of the line segment between the points (-3,9) and (1,1).

3
7) Find the gradient of the above line segment.

8) Find the mid-point

9) Find the gradient & intercept of the line with equation 3y-2x = 12

Part – B
1) Find the area and Perimeter of each figure.

3 cm 3 cm
8 cm

3 cm 6 cm 6.5 cm

12 cm
14 cm
8 cm

8 cm
90°

9.5 cm

4
2) Find the area of the shaded portion.

6 cm
6 cm

3) What is the special name of this quadrilaterals?

Part – C
1. Name these polygons.

2. Find the size of the angle marked x .

2x
x x

2x 3x

3. Find the size of each exterior angle of a regular polygon with 10 sides.

4. Find the size of the angle marked x .

2x

3x
x

2x 5
x
3x
 a
5. Find the values of letters

30°

c
650
1100
85°
600
131°
700
b 85°

6. (i) What is the sum of exterior angles of the polygon ABCDE ? X

(ii) Find the sum of interior angles.

130°
(iii) Find the angle marked X .
80°
120°

Part – D
1. Share 80 toffees amongst three people so that their shares are in the ratio 2:3:5

2. Find X if X : 10 = 3 : 6 ?

3. Simplify the ratio 3:5 in the form n:1 ?

6
4. A map has a scale of 2cm to 6m.
(i) Express this scale in the form 1 : n.

(ii) The actual distance between two places is 20km. calculate the distance on the map between these 2 places.

5. Express the ratio in simplest form 2.5 m : 5 Km ?

6. The ratio of apples in two buckets is 4:6, the first bucket is having 6 apples. How many apples in the second
bucket ?

7. Mrs. Sebastian buys 6 apples and 20 bananas; Mrs. Lane buys 2 apples and 5 bananas. Find the ratio of the
total number of apples to bananas ?

8. A computer operator charges £ 50 for work, which took her eight hours. How much would she charge for 12
hours work at the same rate?

7
9. 3 painters take 4 days to paint the outside of a house. How long would it take 6 painters to paint the same
hours at the same rate ?

10. Amanda, Britney and Charles share $1000 in the ratio 8 : 7 : 5.

Calculate the amount of money each of them receive ?

11. State the Pythagoras` theorem (explain with an example )

x
12. Find the missing length of the given triangles.
A

15cm

45cm

12 cm
C
B 60 cm

8
13. In Triangle ABC AC=2.7cm AB=4.5cm and BC=3.6 Is the following triangle right-angled ?

14. Triangle LMN: LM =2.1cm, MN=2.8 cm and NL=3.5 cm. Is this a right angled triangle?

15. The diagram shows a triangle. BC = 8 m and AC = 11 m. Calculate the length of AB ?

The following measure will help with your calculations . Please give your final answer in 3 s.f.
√57 = 7.54983 √75 = 8.66025 √125 = 11.18033 √185 = 13.60147

A
( Not to scale)

B C

16. The triangle PQS shown below, SR = RQ = 10m and PR = 5m . Calculate SP ? P

R
S Q

17. Calculate the perimeter of the triangle PQS ?

9
 Part – E
1. A group of 52 children were each asked which type of book they most like to read. 2 of them do not like to
read any book. 9 children said they liked Horror best
The pictogram shows some of the results.

Children

(i) Complete the key ?

(ii) Complete the pictogram ?
(iii) How many children said Comedy?
(iv) Which type of book was most popular?

2. Yasith records the sizes of 30 dresses sold in her shop sells at a day.

4 10 5 6 4 8 6 4 7 3 9 7 4
7 3 5 4 6 5 10 7 5 5 6 4 7
7 6 6 5

(i) Using the list above complete the frequency table.

Dress size 3 4 5 6 7 8 9 10
Frequency

(ii) Which dress size had the most sales?

3. The pie chart summarises the results of a local election

(i) Candidate B received 1600 votes.
Work out the total number of people who voted in the election.

(ii) What fraction of the vote did candidate D receive?

Give your answer in its lowest terms

10
(iii) How many more votes than candidate A did candidate C receive?

4. Jenny went on a cruise ship from St Petersburg. It visited four other ports.
25 guests are asked which port they enjoyed the most. Replies are listed below.
(a) Complete the bar chart and the table below

Port Copenhagen Helsinki St Petersburg Stockholm Tallinn

Frequency 8 5 1

10

(b) Which port is most enjoyed by the guest ?

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