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#### Algebra Model Question Paper

8th Standard EM

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Maths

Time : 01:00:00 Hrs
Total Marks : 40
5 x 1 = 5
1. The missing terms in the product -3m3n X9(_)m4n3 are

(a)

mn2,27

(b)

m2n,27

(c)

m2n2,-27

(d)

mn2,-27

2. If the area of a rectangular land is(a2-b2)− sq.units whose breadth is()ab− then, its length is__________

(a)

a-b

(b)

a+b

(c)

a2-b

(d)

(a+b)2

3. In a polynomial, the exponents of the variables are always ___________.

(a)

integers

(b)

positive integers

(c)

non negative integers

(d)

non-positive integers

4. Product of 4p, -7q3, -7pq is _________.

(a)

196p2q4

(b)

196pq4

(c)

-196p2q4

(d)

196pq4

5. Square of (3x - 4y) is _______.

(a)

9x2-16y2

(b)

6x2-8y2

(c)

9x2+ 16y2 + 24xy

(d)

9x2 + 16y2-24xy

6. 5 x 2 = 10
7. Multiply a monomial by a monomial
-2m2,(-5,)3

8. Expand 5x(2y− 3)

9. Find the missing term _________×(−15m2n3p)= 45m3n3p2

10. Find the product of the following
(4a,3a2)

11. Divide 6x3y2z2 by 3x2yz

12. 5 x 3 = 15
13. Find the product of 2x2y2,3y2z and –z2x3

14. Expand (y-5)3

15. Expand (x+4)3

16. Find the product of the following
${ 4x }^{ 2 }yzby\cfrac { 3 }{ 2 } { x }^{ 2 }{ yz }^{ 2 }$

17. Find the product of the following.
$\cfrac { -8 }{ 5 } { x }^{ 2 }{ yz }^{ 2 }by-\cfrac { 3 }{ 4 } { xy }^{ 2 }z$

18. 2 x 5 = 10
19. Factoris x2+8x+15

20. Factorize
9-a6+2a3-b6