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#### Algebra - One Mark Questions

8th Standard EM

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Maths

Time : 00:30:00 Hrs
Total Marks : 10
5 x 1 = 5
1. The product of 7p3 and (2p2)2 is

(a)

14p12

(b)

28B7

(c)

9p7

(d)

11p12

2. The missing terms in the product -3m3n X9(_)m4n3 are

(a)

mn2,27

(b)

m2n,27

(c)

m2n2,-27

(d)

mn2,-27

3. If the area of a square is 36x4y2then, its side is______

(a)

6x4y2

(b)

8x2y2

(c)

6x2y2

(d)

-6x2y

4. If the area of a rectangle is 48m2n3 and whose length is 82mn then, its breadth is______

(a)

6mm

(b)

8m2n

(c)

7m2n2

(d)

6m2n2

5. 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

6. 5 x 1 = 5
7. $\cfrac { { 18m }^{ 4 } }{ { 2m }^{ 3 }{ n }^{ 5 } } =\_ \_ \_ { mn }^{ 5 }$

()

$\cfrac { 18{ m }^{ 4 }(n^{ 98 }) }{ 2m^{ (3) }{ n }^{ 3 } } =9mn^{ 5 }$

8. $\cfrac { { 42a }^{ 4 }{ b }^{ 5 }\left( \_ \right) }{ { 6a }^{ 4 }{ b }^{ 2 } } =\left( \_ \right) { b }^{ 3 }{ c }^{ 2 }$

()

$\cfrac { { 42a }^{ 4 }{ b }^{ 5 }\left( c^2 \right) }{ { 6a }^{ 4 }{ b }^{ 2 } } =\left( 7 \right) { b }^{ 3 }{ c }^{ 2 }$

9. Expand the following
(p + 2)2=_________

()

(p + 2)2 = p2 + 2(P) (2) + 22 =p2 + 4p + 4

10. Expand the following
(3 - a)2=________

()

(3 - a)2 =32-2(3) (a) +a2= 9 - 6a + a2

11. Expand the following
(62-x2)=_______

()

(62-x2) = (6+x)(6-x)