CBSE Board Class 8 Math Sample Papers 2008

SAMPLE PAPER 2008
CLASS 8 MATHS

1. There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate?

2. The difference between compound interest and simple interest on an amount of Rs. 15,000 for 2 years is Rs. 96. What is the rate of interest per annum?

3. A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed

4. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

5. A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

6. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?

7. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. In how many days B can do the work alone?

8. A bag contains coins of denomination of Rs. 5 and Rs. 2. The total value of these coins is Rs. 1272. If the number of two rupee coins is 15% of the five rupee coins, find the number of coins of
each denomination.

9. The following data shows the expenditure of an individual over various items :
Items  Education  Food  Rent  Clothing  Others
Expenditure (in Rs.) 1600  3200  4000     2400   3200
Represent the above data by a pie chart.

10. A rectangular sheet of aluminium foil is 44 cm. long and 20 cm. wide. A cylinder is made out of it, by rolling the foil along width. Find the volume of the cylinder.

Or, what is the value of x if ABCD is a parallelogram and CBE is an isosceles triangle?
11. Fill in the blanks carrying 1 marks
1) If the edges of a cube are halved, then its volume become
2) For plotting a point on graph sheet, we need ______ and ______.
3) ---- is the co-ordinates of origin.
4) The point (0, 5) lie on--------- axis
5) The representation of statistical data by means of circle is known as ------- that is also called a----
6) A coin is tossed twice. --------- is the probability of getting both tails.
7) One card is drawn from a well shuffled deck of 52 cards. --- is  the probability of getting a face
card.
8) ------ is the maximum value of the probability for an event?
9) Two dice are thrown simultaneously. –- is the probability of getting an even number as the sum.

11. The extension in an elastic string varies directly as the weight hung on it. If a weight of 150g produces an extension of 1.8cm, what weight would produce an extension of 19.6cm?

12. A group of 120 men had provisions for 200 days. After 5 days, 30 men died due to an epidemic. How long will the remaining food lost?

13. 1200 soldiers in a fort had enough food for 28 days. After 4 days. Some soldiers were transferred to another fort and thus the food lasts for an extra 32 days. How many soldiers left the fort?

14. If 12 men or 15 woman can finish a piece of work in 66 days. How long will 2 men and 3 woman take to finish the work?

15. If 5 men or 7 women earn Rs 525 per day, how much would 7 men and 13 women earn per day?

16. In an army camp of 1400 men, these is enough food to last for 18 days if each man consumes 396g per day. How many men should leave the camp so that the same food may last for 21 days with each man having 432g per day?