SESSION ENDING EXAM- 2018

MATHEMATICS

CLASS-VIII

TIME: 2HRSM.M. 80

General Instructions:

  1. The question paper consists of 27 questions divided into 4 sections A, B, C and D.
  2. Section A contains 4 questions (1-4) of 1 mark.
  3. Section B contains 4 questions (5-8) of 2 marks.
  4. Section C contains 8 questions (9-16) of 3 marks.
  5. Section D contains 11 questions (17-27) of 4 marks.
  6. There is an internal choice in Section D for 3 questions.
  7. Please write the serial no. of the question before attempting it.

Section A (1 mark each)

Q.1 Find the additive inverse ?

Q.2 Find the product

Q3. Find the value of.

Q4. Find the common factor of 6abc, 24ab.

Section B (2 marks each)

Q5. Find the square of 42 using suitable identity.

Q6. Using Suitable Identity

Q7. Find the area of rhombus whose diagonals are of length 10cm and 8.2 cm

Q8. Find the side of cube whose surface area is 600 sq.cm

Section C (3 marks each)

Q9. Find six rational number between and .

Q10. Write a Pythagorean triplet whose smallest member is 8.

Q11. Find the least numbers which must be subtracted from 3250 so as to get perfect

square. Also find the square root of the perfect square so obtained.

Q12. a) Express 1.0001 X in usual form.

b) Express 0.000000942 in standard form.

Q13. Factorise (l+m)2 - (l-m)2

Q14. Plot the points K (2, 3), L (5, 3), M (5, 5) and N (2, 5) on a graph sheet. Verify if

they lie ona line.

(Only for visually impaired students)

(a) What is the line graph?

(b) Write the coordinates of origin?

Q15.Draw the graph of

Side of square (in cm) / 2 / 3 / 3.5 / 5 / 6
Perimeter(in cm) / 8 / 12 / 14 / 20 / 24

(Only for visually impaired students)

Rohit can drive a car at a uniform speed of 40Km/hr. Draw a time distance table for

this situation; also find the distance covered in 3 hour.

Q16. Find the number of edges of a polyhedron if the number of its faces are 20 and number of vertices are 12 by using Euler’s formula

Section D (4 marks each)

Q 17. Using appropriatiesproperties find:

Q18. Solve :

OR

Simplify and solve: 15(y-4)-2(y-9) +5(y+6) =0

Q19.Amina thinks of a number and subtractsfrom it. She multiplies the result by8.

The result now obtained is 3 times the same number she thought of. What is

the number?

Q 20. Show that (a - b) (a+b) + (b- c) (b+c) +(c-a) (c+a) =0.

Q21. A closed cylindrical tank of radius 7m and height 3m is made from a sheet of metal.

How much sheet of metal is required? Also find the volume of cylindrical tank.

OR

A road roller takes 750 complete revolutions to move once over to level a road.

Find the area of the road if the diameter of road roller is 84 cm and length is 1 m.

Q22. A suitcase with measures 80cm x 48cm x 24cm is to be covered with a tarpaulin cloth.

How many metres of tarpaulin of width 96 cm is required to cover 100 such suitcases?

Q23. Simplify:

Q24. Suppose 2 kg of sugar contains 9X 106crystals. How many sugar crystals are there in?

a)5 kg of sugar b) 1.2kg of sugar.

OR

A machine in a soft drink factory fills 840 bottles in 6 hours. How many bottles it

will fill In 5 hours.

Q25. There are 100 students in a hostel.Food provisions for them is for 20 days. How

long will the provision last if 25 more students joins the group?

Q26.Factoriseand divide as directed (

Q27. a)If 31z5 is multiple of 3, where z is a digit, what might be the value of z?

b) Find values of letters

3 A

+ 2 5

B 2

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