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Class 8 Mathematics Revision Exercise 2
If x=2, y=1, and z=3, what is the value of
3
x
-
4
y
+
2
z
2
(
x
+
2
y
-
z
)
?
A. 8
B. 5
C. 4
D. 7
(2m 40s)
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1.
A rectangle measures 12 cm long and 10 cm wide. The length of the rectangle is increased in the ratio 3:2 while its breadth is decreased in the ratio 4:5. By what ratio is the area of the rectangle increased? A. 6:5 B. 5:4 C. 3:2 D. 4:3
2.
The table below shows postal charges for sending registered letters and parcels up to a maximum of 7kg
3.
What is the value of:
1
2
o
f
(
3
1
2
-
1
1
4
)
×
2
2
3
+
3
3
5
÷
3
10
1
3
+
1
3
4
×
2
2
3
4.
What is the next number in the pattern below? 92, 79, 66, 53, - A. 43 B. 42 C. 41 D. 40
5.
Abudalla wanted to set a rightangle so that he can mark the school athletics field. Which one of the following set of three measurements would he use? A. 3, 4.5, 6.5 B. 2.5, 6, 6.5 C. 3.5, 5, 6.5 D. 1.5, 2, 3.5
6.
Sakwa deposited sh. 25 000 in a bank which paid compound interest at the rate of 10 percent per annum. If he withdrew all his money after
1
1
2
years, how much interest did his money earn? A. Sh 5 250 B. Sh 2 500 C. Sh 1 375 D. Sh 3 875
7.
Kamore started from his home (H) at 10.00 a.m, and travelled to town A according to the graph below. On the way he had to stop for 30 minutes to take refreshments. What was kamore’s average speed for the whole journey in kilometres per hour? A. 40 B. 60 C. 50 D. 45
8.
A triangle has an area of
48
c
m
2
The length of the base of the triangle is (5x-4) and its height is 6 cm. what is the value of x? A.
2
2
5
B. 4 C. 20 D. 3
9.
A school clock gains 3 seconds every hour. The clock was set correct at noon on Monday. What time was it showing at noon on Thursday of the following week.? A.12.06pm B.12.12pm C.11.48a.m D. 12.05p.m
10.
Ananda bought bananas in bunches of 20 bananas each at sh 25 per bunch. She cut them into smaller bunches of 5 bananas each and sold them at sh 10 per bunch. What percentage profit did she make? A. 40% B. 50% C. 60% D. 70%
11.
A farmer of cows and goats had a total of 200 animals on his farm. Out of these 20% were cows and the rest were goats. He decided to increase his cows by 30% and decrease his goats by 10%. How many animals altogether did he end up with? A. 160 B. 184 C. 196 D. 212
12.
The first eleven pupils in a class scored the following marks in a mathematics test: 95, 50, 48, 63, 58, 75, 48, 44, 58, 84, 48. Their teacher worked out the mean, mode and medium of these marks. Which of the following gives the mean, mode and median in that order? A. 61, 58, 48 B. 61, 48, 58 C. 58, 61, 48 D. 48, 58, 61
13.
What is the place value of digit 6 in the number 4693017? A. Thousands B. Ten thousands C. Millions D. Hundred thousands
14.
A meeting started in the morning at the time shown on the clockface alongside. If the meeting lasted for 2 hours 35 minutes, what time was a 24hour clock showing when the meeting ended? A. 1320h B. 1420h C. 1310h D. 1410h
15.
A car is moving at a speed of 25 metres per second. What is the speed in kilometres per hour? A. 30 B. 60 C. 90 D. 80
16.
A drum contained 28 litres 8 decilitres of fruit juice.The juice was packed into smaller containers each with a capacity of 2 litres 4 decilitres. How many containers were filled? A. 12 B. 16 C. 13 D. 12
17.
If x=2, y=1, and z=3, what is the value of
3
x
-
4
y
+
2
z
2
(
x
+
2
y
-
z
)
? A. 8 B. 5 C. 4 D. 7
18.
A tailor bought
17
1
4
metres of cloth to make school uniforms. Each uniform took
2
7
8
metres of cloth. How many uniforms did the tailor make? A. 8 B. 6 C. 5 D. 12
19.
Which of the following patterns can be placed in the blank space in the figure above to complete the pattern correctly?
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