SAMPLE PAPER SA-1 8TH MATHEMATICS-1 
1. What least number must be subtracted from 7250 to get a perfect square? Also, find the square root of this perfect square
2. What is the least number by which 12348must be divided to obtain a perfect square?
3. Find the cost of erecting a fence around a square field whose area is 9 hectares if fencing costs Rs 3.50 per metre
4. Find the least number of six digits which is a perfect square. Find the square root of this number.
5. Divide
(1) x3 - 1 by x - 1 (2) 7 +15x -13x2 +5x3 by 4 - 3x + x2
6. . x + y + z = 0, prove that x 3+ y3 + z3 = 3xyz. Or, Factorize : (a8 – b8)
7. If ( x2 + 1/X2) = 83 . Find X3- 1/X3
Or, , 
Factorize (i) 25a² – 4b² + 28bc – 49c² (ii) 5y² – 20y – 8z + 2yz
8. A motor boat covers a certain distance downstream in a river in 5 hours. It covers the same distance upstream in 6 hours. The speed of water is 2 km/hr . Find the speed of the boat in still water.
9. Three prizes are to be distributed in a quiz contest. The value of the second prize is five sixths the value of the first prize and the value of the third prize is four – fifths that of the second prize. If the total value of three prizes is Rs. 150, find the value of each prize.
10. (a) Each side of a triangle is increased by 10 cm. If the ratio of the perimeters of the new triangle and the given triangle is 5 : 4, find the perimeter of the given triangle
(b) . The difference between two positive integers is 36. The quotient, when one integer is divided by the other is 4. Find the two integers.
11. Factorize
(1) x4 – (y + z)4 (2) y2 –7y +12 (3) 6xy – 4y + 6 – 9x  (4) a4 – 2a²b² + b4 (5) (x² – 2xy + y²) – z² 

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Comments

09/28/2011 23:41

Good questions for practice tem end exam

Reply
07/01/2012 00:51

it is very good practice for me

Reply
renuka
07/20/2012 05:14

thank u so much..... it will help me

Reply
anonymous
10/01/2012 06:01

easy questions

Reply
anonymous
10/26/2012 23:00

really..very easy questions

Reply
anonymous
10/26/2012 22:58

very bad questions

Reply
Summi
12/09/2012 05:48

Read
http://cbseadda.blogspot.in/2012/12/cbse-8th-class-maths-with-solutions.html

Reply
mantoo kumar
02/02/2013 07:42

its very easy to this

Reply
12/04/2013 22:26

Boards have reached your doorsteps. The last few days before the examination call for ‘smart and quick study

Reply
aman
12/07/2013 06:55

very good sample paper for practice

Reply
12/30/2013 22:56

very bad

Reply
somkant rahangdale
01/01/2014 03:22

I want to solution of 8th cbse maths

Reply



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