## CBSE Sample Papers for Class 8 Maths – SA1

**MATHEMATICS****SAMPLE TEST PAPER (SEMSTER I)****CLASS VIII**

**Class: **8 Max | **Max Marks:** 45 | **Time : **2hrs

General Instructions:

- All questions are compulsory.
- Questions 1to 5 carry 1mark each.
- Questions 6 to 16 carry 2mark each.
- Questions 17 to 22 carry 3mark each

1. Find the additive inverse of −7 / 11

2. Write the number in standard form 349*10^{6}

3. Find the number whose square is given 5929

4. √0.8 = ?

5. Convert 6:7 to percentage

6. Verify (3/4 + -2/5) + (-7/10) = (3/4) + (-2/5 + -7/10)

7. Find ((5^{-1} x 3^{-1})^{-1} / 6^{-1})

8. By using the formula evaluate (198)

9. Evaluate √(11025)

10. Evaluate ^{3}√(3375)

11. check weather the number is divisible by 9 or not

a) 845 b) 45689 c) 981 d) 1026

12. Subtract +6p+q+3r+8 from p-2q-5r+6

13. Evaluate using identity (49)^{2}

14. In what time will Rs 5000 amount to Rs 2230 at 10% per annum, compounded annually?

15. On selling a boat for rs 521 a man gains 8 % . For how much should he sell it to gain 9%

16. a) By what rational number should 21/43 be multiplied to obtain 12/23

b) Find the value of x (42x-1 + 10) ÷ 8 = 4

17. Find the value of A,B,C

[(AB x BA)] / [(B+1) x CB]

18. Factories (2x^{2}+3x-9) (4x^{2}-9x+8)

b) x^{2}-17x+16

19. When (x-1/x) = 5 , find value of (x^{2} – 1/x^{2})

20. solve (9x − 7)/(4x+ 2) = (3x+ 4)/(4x+ 7)

21. A and B can do a piece of work in 15 days; B and C can do it in 12 days while C and A can finish it 20 days. In how many days will A,B,C finish it working together?

22. a) Find the SP when CP = Rs 1580 and gain % = 2%

b) Find the CP when SP = Rs 6520 and gain % = 12%

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