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Class 8 Mathematics Revision Exercise 4
What is the value of
x
2
y
−
√
x
y
2
x
+
2
y
when x=4 and y= 3?
A. 6
B.
4
2
5
C.
5
2
5
D.
4
1
5
(3m 6s)
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1.
In the figure below, PQT is a straight line and PQ is parallel to SR. line PQ=QR and angle RQT=
130
0
. What is the size of angle PRS? A.
45
0
B.
65
0
C.
55
0
D.
35
0
2.
In one year a businessman made a profit of sh 86 500. In the following year his profits increased by 20%. How much profit did he make that year? A. Sh 86 520 B. Sh 69 200 C. Sh 103 800 D. Sh 86 480
3.
A certain poultry farm keeps hens, ducks and turkeys. The ratio of hens to ducks is 5:2. The number of turkeys is 35 less than the number of hens. If there are 30 ducks, how many turkeys are there? A. 40 B. 75 C. 65 D. 105
4.
What is the value of
x
2
y
-
√
x
y
2
x
+
2
y
when x=4 and y= 3? A. 6 B.
4
2
5
C.
5
2
5
D.
4
1
5
5.
A tea estate manager employs men and women to pick tea leaves in a tea farm. For every two men, three women are employed. Each worker is paid sh 600 per week. How much money altogether were the workers paid in a week that 30 men were employed? A. Sh 18 000 B. Sh 45 000 C. Sh 27 000 D. Sh 21 000
6.
Jasmine had 6 more sweets than Njoki. Atieno had one third as many sweets as Jasmine. The three girls had a total of 22 sweets. If Njoki had x sweets, which of the following equations represents the information given in this question? A. 7x+24=66 B. 7x-24=66 C. 3x+24=66 D. 6x+24=66
7.
What is the median, mode and mean, in that order of the following numbers: 20, 22, 19, 26, 44, 15, 37, 40, 25, 23, 26 ? A. 25, 26, 27 B. 27, 26, 25 C. 25, 27, 26 D. 26, 25, 27
8.
Amina sold her car through a sales agent who charged her 12% of the price of the car as commission. If Amina received sh 633 600, what was the price of the car? A. Sh 709 632 B. Sh 633 612 C. Sh 720 000 D. Sh 557 568
9.
In a meeting the number of men was half the number of women. The number of children was one third the number of women. Altogether there were 52 800 people in the meeting. How many more women than men and children attended the meeting? A. 14 400 B. 9 600 C. 4 800 D. 28 800
10.
Simiyu bought three packets of sweets each containing 120 sweets at sh 50 per packet. He sold all the sweets at sh 2 for every 3 sweets. What percentage profit did he make? A. 160% B. 60% C.
37
1
2
% D. 12%
11.
A cylindrical container has a capacity of 2.31 litres. If the diameter of the container is 14 cm, what is its height in centimetres? A. 15 B. 3.75 C. 10 D. 14
12.
The distance between two villages is 6.4 km. on the map of the region this distance is represented by a line 1.6 cm long. What is the scale of the map. A. 1:4 B. 1:4 000 C. 1: 400 000 D. 1:40 000
13.
Ogolla recorded the number of bags of maize he sold each day in a certain week as shown in the table below. The number of bags sold on Thursday are not entered in the table. The mean sales per day for that week was 25 bags and each bag was sold as sh. 800 how much more money did ogolla receive on Saturday than on Thursday? A. Sh 35 200 B. Sh 22 40
14.
Kago had salt in packets as follows: 150 packets of 100g each 120 packets of 250g each 100 packets of 500g each 80 packets of 1kg each 25 packets of 2kg each He decided to re-pack all this salt in
1
4
kg packets. How many packets did he get? A. 900 B. 880 C. 450 D. 500
15.
The graph below shows cost of petrol How many litres of petrol can be bought for sh. 420? A. 6.8 B. 7.6 C. 7.3 D. 7.4
16.
The ratio of men to women in a committee is 3:2. If the there are 3 more men than women, how many women are in the committee? A. 6 B. 9 C. 15 D. 5
17.
The marked price of a radio is sh 1 800. Waithera bought the radio at a discount of 15%. How much did she pay for the radio? A. Sh 270 B. Sh 2070 C. Sh 1 530 D. Sh 1 785
18.
Aluoch bought the following items from a supermarket. 2 kg of sugar at sh 48 per kilogram 2 kg tin of cooking fat for sh 165 2 packets of tea leaves at sh 155 each 3 loaves of bread for sh 63 She paid her bill with a one thousand shilling note. How much change did she get? A. 75 B. Sh 240 C. Sh 366 D. Sh 201
19.
In a polling station there were 900 registered voters. During and election 10% of the registered voters did not cast their votes. The rest cast their votes to Ahmed, Babu and Chakumbo in the ratio 3:2:1. If 30 votes were spoilt, how many votes did Ahmed get? A. 405 B. 435 C. 260 D. 390
20.
A school had three streams from standard 1 to standard 4 and two streams from standard 5 to standard 8. In a certain year, the average number of pupils per class was as follows: Standard 1 to standard 4: 50 Standard 5 to standard 8: 40 Each pupil in the school was given 6 exercise books. The exercise books were delivered to the school in packets each containing a dozen exercise books. How many
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